Earth's Busy Neighborhood
ACC's Small Object Report for 26 Dec.-1 Jan. 2006
A semi-automated report compiled on 2 January 2006 at 0017 UTC
There are 22 small objects reported in the last 168 hours, during which 7 were newly discovered.
Currently 934 NEAs are listed with H>22.0 by JPL and/or the Minor Planet Center (766 are listed as such by both).
[ Small Object News | Objects (by size) | Object Index (alpha/xref) | 48 Hours | viewing | Weekly ]
Editor's note: "Small" is defined by an asteroid having an absolute
magnitude (brightness) calculated at greater than H=22.0, or very roughly 135
meters in diameter. Larger H means lower size and the astronomical community
does not classify such objects as "potentially hazardous" no matter how close
they may come to the Earth. However, as demonstrated by the mile wide (1.6 km.)
Barringer Crater in Arizona, blasted out by a "small" asteroid some 50,000
years ago, some asteroids too small to be labeled potentially hazardous could
still cause severe local damage. These are sometimes called "Tunguska-class
objects" (TCOs), after the 1908 event that was probably caused by a comet
remnant or asteroid too small to be classified today as hazardous but packing
enough wallop to flatten a Siberian forest area the size of a large city.
NEODyS recently changed its main Risk page to qualify "Objects too
small to result in heavy damage on the ground" as having "absolute magnitude
> 25," which roughly corresponds to 35 meters wide. And JPL in October
started flagging (with a blue background) risk-listed objects of "Estimated
diameter 50 meters or less" as "not likely to cause significant damage in the
event of an impact, although impact damage does depend heavily upon the specific
(and usually unknown) physical properties of the object in question."
The discovery and follow-up tracking of asteroids with H>22.0 represents
some of the most difficult and very best observing work being done today by
amateur and professional astronomers around the world, and the page you are
reading is dedicated to recognizing their current successes.
Small Object News (newest items first) [ object listings |
index |
48 Hours |
viewing |
top ]
- Jan. 1: DOU MPEC 2006-A02 today reports observation of eight small objects: 2005 XC, 2005 XN, 2005 XZ7, 2005 YA37, 2005 YM128, 2005 YN128, 2005 YR3, and 2005 YU128.
Among risk-rated small asteroids, 2005 YA37 was tracked by Farpoint Observatory in Kansas, and Desert Moon Observatory in New Mexico added 2.061 days to 2005 YR3's former 6.931-day observing arc.
Spacewatch observed 2005 XC with its 1.8m telescope in Arizona. The Mt. Lemmon Survey in Arizona added seven-plus hours to the observation arcs for its discoveries 2005 YM128 and 2005 YN128, boosting both to a bit more than a day. And LINEAR reported additional observations from New Mexico within the discovery arc of its latest small object find, 2005 YU128.
And Schiaparelli Observatory in Italy reported one position from Dec. 4th within the 2.798-day observing arc of 2005 XN, and a triplet from Dec. 10th within 2005 XZ7's 3.709-day arc. Both of these objects went out of view for most NEO observers around 19-20 Dec.
- Dec. 31 #3: NEODyS has posted 2005 YU55 as an impact risk.
- Note: See Editor's note above with a new description of the word "small" and the gray boundary between asteroids that, if they entered Earth's atmosphere," might cause local destruction or might explode spectacularly but harmlessly at high altitude.
- Dec. 31 #2: Another discovery has been announced today, of 2005 YU128, and DOU MPEC 2005-Y65 reports observation of two small objects: 2005 XC and 2005 XX77.
Today's DOU reports that Desert Moon Observatory in New Mexico picked up two small objects, adding 19.896 days to what had been a 9.142-day observing arc for 2005 XC, and extending the former 13.723-day arc for 2005 XX77 by 6.396 days.
LINEAR caught 2005 YU128 yesterday morning just as it was passing Earth at about 10.9 lunar distances (LD). It was confirmed this morning UT by Great Shefford Observatory in England and Farpoint Observatory in Kansas, and in Arizona by Spacewatch with its 0.9m telescope and by Sabino Canyon Observatory.
Update: The FMO Project reports that online volunteer Rafal Konkol of Poland was the one who caught the object later designated 2005 YU128 while reviewing images from the Spacewatch 0.9m telescope.
- Dec. 31 #1: The discoveries of three small objects have been announced early on the last day of the year: 2005 YM128, 2005 YN128, and 2005 YO128. Two were discovered by the Mt. Lemmon Survey (MLS) and the other by MLS's parent Catalina Sky Survey, both located in the Catalina Mountains north of Tucson, Arizona. Peter Birtwhistle at Great Shefford Observatory in England helped confirm all three, and Robert Hutsebaut in Belgium helped confirm 2005 YO128 using a remotely-controlled telescope in New Mexico.
Update: 2005 YO128 is presently calculated by JPL to pass Earth at 6.5 lunar distances (LD) on January 3rd. Much further out, 2005 YM128 passes tomorrow at 19.4 LD, and 2005 YN128 already went past, at 21.4 LD on the 19th.
- Dec. 30: DOU MPEC 2005-Y56 reports observation of five small objects: 2005 UR64, 2005 YA37, 2005 YR3, 2005 YU8, and 2005 YY1.
Desert Moon Observatory in New Mexico tacked 27.281 days onto what had been a 31.997-day observing arc for 2005 UR64, and also reported 2005 YY1. Farpoint Observatory in Kansas added 2.066 days to the 0.966-day discovery arc for risk-listed 2005 YA37, and also tracked risk-listed 2005 YR3. And 2005 YU8 was observed with the Spacewatch 1.8m telescope in Arizona.
- Dec. 29 #2: JPL has posted 2005 YU55 with 1,111 highly-preliminary impact solutions, the first a little over three years away, in April 2009.
- Dec. 29 #1: The discovery of 2005 YU55 was announced today, and DOU MPEC 2005-Y46 carries observations of 2005 XL4, 2005 YR3, 2005 YU8, and 2005 YY1.
At an absolute magnitude of H=22.4 (MPC) to 22.09 (JPL), according to preliminary calculations, 2005 YU55 is one of the larger small objects (on the order of 110 to 130 meters in diameter) with an orbit that can bring it to less than half a lunar distance from the Earth. It was discovered yesterday morning by Robert McMillan in Arizona with the Spacewatch 0.9m telescope, and was confirmed overnight by Jim Scotti with the Spacewatch 1.8m telescope and by Gary Hug at Farpoint Observatory in Kansas. It will only remain dimly in view for most NEO observers for the next dozen days or so.
Jornada Observatory in New Mexico added 8.197 days to what had been a 15.762-day observing arc for 2005 XL4, and added 5.040 days to the 0.935-day discovery arc for 2005 YY1. Both the 0.9m and 1.8m Spacewatch telescopes added 2.192 days to the 1.900-day discovery arc for 2005 YU8. And Junk Bond Observatory in Arizona kept tabs on risk-rated 2005 YR3.
- Dec. 28 #2: JPL today posted impact solutions for the first time for 2005 YR3. This object was reported in today's DOU MPEC 2005-Y44 as observed this morning from Great Shefford Observatory in England.
Today's DOU also reports that 2002 LW (see entry [alt.]) was recovered with the ANU 1m telescope at Siding Spring on Dec. 25th. This object was observed for 42 days during June-July 2002, and was recovered (and last reported observed) as a faint object by Andrea Boattini and Olivier Hainaut on 29-30 Jan. 2003 using the 3.58m New Technology Telescope at La Silla in Chile.
- Dec. 28 #1: Announced on the 27th by the MPC at apparent magnitude H=22.0, JPL early on the 28th UT (still the 27th local time) has put new discovery 2005 YA37 at H=22.01 or 22.1 and posted it with two very low-rated impact solutions. It is currently calculated to stay near Earth for the next half year, not going out of view until mid-July.
JPL also has revised its similarly low risk assessment for 2004 XB45 [alt. link]. This object, which is roughly estimated to be 20 meters wide, has a 3.539-day observation arc and was last reported observed a year ago.
- Dec. 27: Today's DOU MPEC 2005-Y39 reports observation of four small objects: 2005 WG57 and 2005 YR3, which have impact solutions, plus
2005 XO4 and 2005 YO3.
The Spacewatch 1.8m telescope in Arizona observed 2005 WG57, which has now gone out of view for most NEO observers. And the 1.8m telescope along with Farpoint Observatory in Kansas reported 2005 YR3, adding 4.040 days to what had been a 1.592-day observation arc.
Great Shefford Observatory in England added 10.009 days to what was a 11.638-day observing arc for 2005 XO4, and tacked 2.937 days onto what had been a span of less than 16 hours for 2005 YO3. 2005 XO4 is presently calculated to go out of view as an evening object in three days, before passing Earth sunward at 18.6 lunar distances. It reaappears in the morning sky around Jan. 18th, rising higher and remaining technically in view as a faint object until about April 20th, by when it will be near opposition and almost as far away as the orbit of Mars.
- Dec. 26 #2: Today's DOU MPEC 2005-Y38 reports observation of three small objects: 2005 CN, 2005 VA, and 2005 WK56.
The Spacewatch 1.8m telescope in Arizona yesterday morning recovered 2005 CN, which hadn't been reported since 16 Feb., when it had a 13.813-day observing arc. The 1.8m also caught 2005 VA, which technically went out of view for smaller telescopes on Dec. 22nd, thus adding 15.310 days to what had been an arc of 38.929 days. And Begues Observatory in Spain tracked 2005 WK56.
- Dec. 26 #1: The discovery of small object 2005 YU8 on Dec. 24th with the Spacewatch 0.9m telescope has been announced.
- See more news, from the week of 19-25 December and other weeks.
Object Listings -- smallest objects first [ Alpha Index | 48 Hours | top ]
2005 YO3 (K05Y03O) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 32 meters per JPL H=25.14, MPC H=25.1
JPL classifies 2005 YO3 as an Aten and calculates an Earth MOID of 0.016497 AU (6.42 LD),
and reports this object passed Earth at 7.8 lunar distances (LD) on 24 Dec. at 0418 UT.
Lowell Observatory reports 2005 YO3 has an MOID of 0.03451 AU (13.43 LD) with Mercury.
Observations are reported from the following observatories in MPEC 2005-Y39:
Great Shefford Obs. [J95]
2005-12-26 2327-2332, 3 pos in MPEC 2005-Y39, follow-up
See also information from the week ending 25 Dec. 2005.
2005 YU128 (K05YC8U) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 33 meters per JPL H=25.06, MPC H=25.2
JPL classifies 2005 YU128 as an Aten and calculates an Earth MOID of 0.022503 AU (8.76 LD),
and reports this object passed Earth at 10.9 LD on 30 Dec.
Observations are reported from the following observatories in MPECs 2005-Y67 and 2006-A02:
LINEAR [704]
2005-12-30 0811-0929, 5 pos in MPEC 2005-Y67, discovery
2005-12-31 0624-0741, 5 pos in MPEC 2006-A02, follow-up
Great Shefford Obs. [J95]
2005-12-31 0142-0157, 4 pos in MPEC 2005-Y67, confirmation
Farpoint Obs. [734]
2005-12-31 0444-0452, 4 pos in MPEC 2005-Y67, confirmation
Spacewatch 0.9m telescope [691]
2005-12-31 0553-0647, 4 pos in MPEC 2005-Y67, confirmation
Sabino Canyon Obs. [854]
2005-12-31 0704-0707, 2 pos in MPEC 2005-Y67, confirmation
2005 YO128 (K05YC8O) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 45 meters per JPL H=24.36, MPC H=24.3
JPL classifies 2005 YO128 as an Aten and calculates an Earth MOID of 0.014015 AU (5.45 LD),
and reports this object will pass Earth at 6.5 LD on 3 Jan. 2006 at about 2237 UT.
Observations are reported from the following observatories in MPEC 2005-Y64:
Catalina Sky Survey (CSS) [703]
2005-12-30 0708-0844, 12 pos in MPEC 2005-Y64, discovery
New Mexico Skies [H06{2}] coded to Robert Hutsebaut via Rent-A-Scope
2005-12-30 1232-1243, 3 pos in MPEC 2005-Y64, confirmation
Great Shefford Obs. [J95]
2005-12-30 2249-2254, 3 pos in MPEC 2005-Y64, confirmation
2005 XZ7 (K05X07Z) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 47 meters per JPL H=24.30, MPC H=24.3
JPL classifies 2005 XZ7 as an Aten and calculates an Earth MOID of 0.048684 AU (18.94 LD),
and reports this object passed Earth at 19.5 LD on 5 Dec.
Lowell Observatory reports 2005 XZ7 has an MOID of 0.01693 AU (6.59 LD) with Venus.
Observations are reported from the following observatories in MPEC 2006-A02:
Schiaparelli Obs. [204]
2005-12-10 0022-0033, 3 pos in MPEC 2006-A02, follow-up
See also information from the week ending 25 Dec. 2005.
2005 YN128 (K05YC8N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 50 meters per JPL H=24.14, MPC H=24.1
JPL classifies 2005 YN128 as an Apollo and calculates an Earth MOID of 0.019082 AU (7.42 LD),
and reports this object passed Earth at 21.6 LD on 19 Dec.
Observations are reported from the following observatories in MPECs 2005-Y63 and 2006-A02:
Mt. Lemmon Survey (MLS) [G96]
2005-12-30 0550-0614, 4 pos in MPEC 2005-Y63, discovery
2005-12-30 0757-0811, 5 pos in MPEC 2005-Y63, confirmation
2005-12-31 0543-0617, 4 pos in MPEC 2006-A02, follow-up
Great Shefford Obs. [J95]
2005-12-30 2225-2242, 3 pos in MPEC 2005-Y63, confirmation
2005 XN (K05X00N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 55 meters per JPL H=23.94, MPC H=24.3
JPL classifies 2005 XN as an Amor and calculates an Earth MOID of 0.060392 AU (23.50 LD),
and reports this object passed Earth at 24.5 LD on 30 Nov.
Observations are reported from the following observatories in MPEC 2006-A02:
Schiaparelli Obs. [204]
2005-12-04 0033-0033, 1 pos in MPEC 2006-A02, follow-up
See also information from the week ending 11 Dec. 2005.
2005 YU8 (K05Y08U) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 56 meters per JPL H=23.89, MPC H=23.9
JPL classifies 2005 YU8 as an Apollo and calculates an Earth MOID of 0.024987 AU (9.72 LD),
and reports this object will pass Earth at 19.3 LD on 13 Jan. 2006
Lowell Observatory reports 2005 YU8 has an MOID of 0.02983 AU (11.61 LD) with Mars.
Observations are reported from the following observatories in MPECs 2005-Y37, 2005-Y46,
and 2005-Y56:
Spacewatch 0.9m telescope [691]
2005-12-24 0706-0801, 3 pos in MPEC 2005-Y37, discovery
2005-12-28 0829-0918, 3 pos in MPEC 2005-Y46, follow-up
Spacewatch 1.8m telescope [291]
2005-12-24 0945-0957, 3 pos in MPEC 2005-Y37, confirmation
2005-12-25 0556-0609, 3 pos in MPEC 2005-Y37, confirmation
2005-12-26 0426-0443, 3 pos in MPEC 2005-Y37, confirmation
2005-12-28 0544-0558, 3 pos in MPEC 2005-Y46, follow-up
2005-12-29 0523-0535, 3 pos in MPEC 2005-Y56, follow-up
Junk Bond Obs. [701]
2005-12-25 0632-0732, 3 pos in MPEC 2005-Y37, confirmation
Farpoint Obs. [734]
2005-12-25 1042-1059, 3 pos in MPEC 2005-Y37, confirmation
Golden Hill Obs. [J77]
2005-12-26 0207-0227, 2 pos in MPEC 2005-Y37, confirmation
2005 XX77 (K05X77X) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 58 meters per JPL H=23.85, MPC H=23.9
JPL classifies 2005 XX77 as an Apollo and calculates an Earth MOID of 0.031635 AU (12.31 LD),
and reports this object passed Earth at 13.2 LD on 25 Nov.
Observations are reported from the following observatories in MPEC 2005-Y65:
Desert Moon Obs. [448]
2005-12-30 0946-1105, 3 pos in MPEC 2005-Y65, follow-up
See also information from the week ending 25 Dec. 2005.
2005 YM128 (K05YC8M) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 60 meters per JPL H=23.77, MPC H=23.8
JPL classifies 2005 YM128 as an Apollo and calculates an Earth MOID of 0.029730 AU (11.57 LD),
and reports this object passed Earth at 19.8 LD on 1 Jan. 2006
Observations are reported from the following observatories in MPECs 2005-Y62 and 2006-A02:
Mt. Lemmon Survey (MLS) [G96]
2005-12-30 0333-0349, 3 pos in MPEC 2005-Y62, discovery
2005-12-30 0622-0650, 8 pos in MPEC 2005-Y62, confirmation
2005-12-31 0518-0535, 3 pos in MPEC 2006-A02, follow-up
Great Shefford Obs. [J95]
2005-12-30 1843-1900, 3 pos in MPEC 2005-Y62, confirmation
2005 YR3 (K05Y03R) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 62 meters per JPL H=23.68, MPC H=23.7
This object has been listed as an impact risk since 24 Dec. 2005.
JPL classifies 2005 YR3 as an Aten and calculates an Earth MOID of 0.010563 AU (4.11 LD),
and reports this object passed Earth at 18.8 LD on 23 Dec.
Lowell Observatory reports 2005 YR3 has an MOID of 0.00026 AU (0.1 LD) with Venus.
Observations are reported from the following observatories in MPECs 2005-Y39, 2005-Y44,
2005-Y46, 2005-Y56, and 2006-A02:
Farpoint Obs. [734]
2005-12-26 0808-0827, 4 pos in MPEC 2005-Y39, follow-up
2005-12-29 0807-0817, 4 pos in MPEC 2005-Y56, follow-up
Spacewatch 1.8m telescope [291]
2005-12-26 1038-1055, 3 pos in MPEC 2005-Y39, follow-up
Great Shefford Obs. [J95]
2005-12-28 0506-0513, 3 pos in MPEC 2005-Y44, follow-up
Junk Bond Obs. [701]
2005-12-28 0650-0712, 3 pos in MPEC 2005-Y46, follow-up
Desert Moon Obs. [448]
2005-12-31 0922-0945, 3 pos in MPEC 2006-A02, follow-up
See also information from the week ending 25 Dec. 2005.
2005 WG57 (K05W57G) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 63 meters per JPL H=23.65, MPC H=23.7
This object has been listed as an impact risk since 1 Dec. 2005.
JPL classifies 2005 WG57 as an Apollo and calculates an Earth MOID of 0.001692 AU (0.66 LD),
and reports this object passed Earth at 13.9 LD on 21 Nov.
Lowell Observatory reports 2005 WG57 has an MOID of 0.04399 AU (17.12 LD) with Mars.
Observations are reported from the following observatories in MPEC 2005-Y39:
Spacewatch 1.8m telescope [291]
2005-12-26 0752-0804, 3 pos in MPEC 2005-Y39, follow-up
See also information from the week ending 25 Dec. 2005.
2005 UR64 (K05U64R) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 63 meters per JPL H=23.64, MPC H=23.6
JPL classifies 2005 UR64 as an Amor and calculates an Earth MOID of 0.090632 AU (35.27 LD),
and reports this object passed Earth at 37.8 LD on 2 Dec.
Lowell Observatory reports 2005 UR64 has an MOID of 0.02924 AU (11.38 LD) with Mars.
Observations are reported from the following observatories in MPEC 2005-Y56:
Desert Moon Obs. [448]
2005-12-29 0824-0941, 3 pos in MPEC 2005-Y56, follow-up
See also information from the week ending 11 Dec. 2005.
2005 YY1 (K05Y01Y) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 79 meters per JPL H=23.17, MPC H=23.1
JPL classifies 2005 YY1 as an Apollo and calculates an Earth MOID of 0.032165 AU (12.52 LD),
and reports this object passed Earth at 12.5 LD on 5 Dec.
Observations are reported from the following observatories in MPECs 2005-Y46 and 2005-Y56:
Jornada Obs. [715]
2005-12-28 0540-0553, 3 pos in MPEC 2005-Y46, follow-up
Desert Moon Obs. [448]
2005-12-28 0825-0840, 2 pos in MPEC 2005-Y56, follow-up
See also information from the week ending 25 Dec. 2005.
2005 CN (K05C00N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 87 meters per JPL H=22.96, MPC H=23.1
JPL classifies 2005 CN as an Apollo and calculates an Earth MOID of 0.029210 AU (11.37 LD).
Observations are reported from the following observatories in MPEC 2005-Y38:
Spacewatch 1.8m telescope [291]
2005-12-25 1015-1028, 3 pos in MPEC 2005-Y38, follow-up
2005 VA (K05V00A) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 87 meters per JPL H=22.95, MPC H=23.0
JPL classifies 2005 VA as an Amor and calculates an Earth MOID of 0.068951 AU (26.83 LD).
Observations are reported from the following observatories in MPEC 2005-Y38:
Spacewatch 1.8m telescope [291]
2005-12-25 0945-1001, 3 pos in MPEC 2005-Y38, follow-up
See also information from the week ending 11 Dec. 2005.
2005 XL4 (K05X04L) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 94 meters per JPL H=22.79, MPC H=22.8
JPL classifies 2005 XL4 as an Amor and calculates an Earth MOID of 0.213508 AU (83.08 LD).
Lowell Observatory reports 2005 XL4 has an MOID of 0.8536 AU (332.1 LD) with Jupiter.
Observations are reported from the following observatories in MPEC 2005-Y46:
Jornada Obs. [715]
2005-12-28 0619-0648, 3 pos in MPEC 2005-Y46, follow-up
See also information from the week ending 25 Dec. 2005.
2005 XC (K05X00C) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 94 meters per JPL H=22.79, MPC H=22.7
JPL classifies 2005 XC as an Apollo and calculates an Earth MOID of 0.007944 AU (3.09 LD),
and reports this object passed Earth at 16.9 LD on 23 Nov.
Observations are reported from the following observatories in MPECs 2005-Y65 and 2006-A02:
Desert Moon Obs. [448]
2005-12-30 0737-0839, 3 pos in MPEC 2005-Y65, follow-up
Spacewatch 1.8m telescope [291]
2005-12-31 0619-0634, 3 pos in MPEC 2006-A02, follow-up
See also information from the week ending 11 Dec. 2005.
2005 WK56 (K05W56K) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 105 meters per JPL H=22.54, MPC H=22.6
JPL classifies 2005 WK56 as an Apollo and calculates an Earth MOID of 0.030957 AU (12.05 LD),
and reports this object passed Earth at 16.7 LD on 28 Nov.
Observations are reported from the following observatories in MPEC 2005-Y38:
Begues Obs. [170]
2005-12-26 0108-0111, 3 pos in MPEC 2005-Y38, follow-up
See also information from the week ending 25 Dec. 2005.
2002 LW (K02L00W) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 110 meters per JPL H=22.45, MPC H=22.4
JPL classifies 2002 LW as an Apollo and calculates an Earth MOID of 0.034393 AU (13.38 LD).
Observations are reported from the following observatories in MPEC 2005-Y44:
Australian Natl. Univ. 1m telescope [413{1}] coded to Rob McNaught
2005-12-25 1147-1153, 2 pos in MPEC 2005-Y44, follow-up
2005 YA37 (K05Y37A) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 126 meters per JPL H=22.15, MPC H=22.2
This object has been listed as an impact risk since 28 Dec. 2005.
JPL classifies 2005 YA37 as an Apollo and calculates an Earth MOID of 0.035774 AU (13.92 LD).
Lowell Observatory reports 2005 YA37 has an MOID of 0.01349 AU (5.25 LD) with Mars.
Observations are reported from the following observatories in MPECs 2005-Y42, 2005-Y56,
and 2006-A02:
Mt. Lemmon Survey (MLS) [G96]
2005-12-26 0653-0719, 4 pos in MPEC 2005-Y42, discovery
2005-12-27 0541-0604, 4 pos in MPEC 2005-Y42, confirmation
Great Shefford Obs. [J95]
2005-12-26 2145-2259, 3 pos in MPEC 2005-Y42, confirmation
Golden Hill Obs. [J77]
2005-12-26 2303-2346, 2 pos in MPEC 2005-Y42, confirmation
Farpoint Obs. [734]
2005-12-29 0726-0739, 2 pos in MPEC 2005-Y56, follow-up
2005-12-31 0248-0312, 3 pos in MPEC 2006-A02, follow-up
2005 XO4 (K05X04O) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 126 meters per JPL H=22.14, MPC H=22.2
JPL classifies 2005 XO4 as an Apollo and calculates an Earth MOID of 0.021860 AU (8.51 LD),
and reports this object passed Earth at 18.6 LD on 1 Jan. 2006
Observations are reported from the following observatories in MPEC 2005-Y39:
Great Shefford Obs. [J95]
2005-12-26 1855-1922, 2 pos in MPEC 2005-Y39, follow-up
See also information from the week ending 18 Dec. 2005.
2005 YU55 (K05Y55U) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 129 meters per JPL H=22.09, MPC H=22.4
This object has been listed as an impact risk since 29 Dec. 2005.
JPL classifies 2005 YU55 as an Apollo and calculates an Earth MOID of 0.000983 AU (0.38 LD).
Lowell Observatory reports 2005 YU55 has an MOID of 0.00060 AU (0.23 LD) with Venus.
Observations are reported from the following observatories in MPEC 2005-Y47:
Spacewatch 0.9m telescope [691]
2005-12-28 0601-0652, 3 pos in MPEC 2005-Y47, discovery
Spacewatch 1.8m telescope [291]
2005-12-28 1134-1148, 3 pos in MPEC 2005-Y47, confirmation
2005-12-29 0420-0432, 3 pos in MPEC 2005-Y47, confirmation
Farpoint Obs. [734]
2005-12-29 0415-0519, 3 pos in MPEC 2005-Y47, confirmation
48 Hours [ Objects Listings (size order) | Object Index (alpha/xref) | top ]
Observations of eight small objects were reported during the last 48 hours:
2005 XC, 2005 XN, 2005 XZ7, 2005 YA37, 2005 YM128, 2005 YN128, 2005 YR3 & 2005 YU128
in MPEC 2006-A02 (Daily Orbit Update) time-stamped 2006 Jan. 1, 07:20 UT.
Date & times for other sources that were parsed to compile this page:
JPL Close Approaches, downloaded at 2006 Jan. 1, 1500 UTC
JPL NEO Orbital Elements, downloaded at 2006 Jan. 1, 1503 UTC
Lowell Observatory Orbit intersections, time-stamped 2006 Jan 01 04:28:33 UTC
MPC NEA.DAT from MPC mirror, downloaded at 2006 Jan. 1, 1455 UTC
Risk monitoring sites, as of A/CC's check at 2006 Jan. 1, 2359 UTC (see CRT page)
Viewing Opportunities for Small Objects [ news | size order | alpha order | top ]
Some objects still in view may be missing from this compilation, which shows 35 small
objects as being currently in view, including 18 not reported in the last seven days.
Viewing by date order - see this list also by designation order
Object View until MOID AU Dia H Arc Notes (calc date)
---------- ---------- -------- --- ----- --- - -----------------------
2005 VD7 2006-01-02 0.019187 130 22.08 25 - recent info - (14 Dec.)
2005 WF55 2006-01-02 0.025962 18 26.34 23 - recent info - (24 Dec.)
2001 XX4 2006-01-03 0.011334 133 22.03 2op - (28 Dec.)
2005 XC1 2006-01-04 0.038985 62 23.70 6 - recent info - (14 Dec.)
2005 SD71 2006-01-04 0.082214 78 23.18 65 - recent info - (14 Dec.)
2005 YO3 2006-01-09 0.016497 32 25.14 4 - (27 Dec.)
2005 YU55 2006-01-10 0.000983 129 22.09 1 - risk listed - (29 Dec.)
2005 WP57 2006-01-11 0.110490 74 23.30 24 - recent info - (25 Dec.)
2001 WW1 2006-01-11 0.108251 142 21.89 2op - MPC H=22.1 - (28 Dec.)
2003 WP25 2006-01-13 0.023076 45 24.38 3op - (28 Dec.)
2005 YO128 2006-01-13 0.014015 45 24.36 1 - (31 Dec.)
2005 YD 2006-01-15 0.021876 42 24.53 4 - recent info - (25 Dec.)
2005 ST4 2006-01-18 0.075147 114 22.36 89 - recent info - (24 Dec.)
2005 YU128 2006-01-18 0.022503 33 25.06 1 - (1 Jan.)
2005 VS 2006-01-19 0.016823 122 22.21 48 - recent info - (22 Dec.)
2005 XL4 2006-01-19 0.213508 94 22.79 24 - (29 Dec.)
2005 YN128 2006-01-19 0.019082 50 24.14 1 - (1 Jan.)
2005 XX77 2006-01-21 0.031635 58 23.85 20 - (31 Dec.)
2005 YY1 2006-01-22 0.032165 79 23.17 6 - (30 Dec.)
2005 YU8 2006-01-23 0.024987 56 23.89 5 - (30 Dec.)
2005 XC 2006-01-23 0.007944 94 22.79 30 - (1 Jan.)
2003 YT70 2006-01-26 0.053689 26 25.55 22 - bright recov. poss. - (15 Dec.)
2005 WC2 2006-01-26 0.247806 111 22.42 29 - recent info - (22 Dec.)
2005 WK56 2006-01-27 0.030957 105 22.54 26 - (26 Dec.)
2002 JD9 2006-01-29 0.053416 111 22.42 9 - bright recov. poss. - (15 Dec.)
2005 VH1 2006-01-30 0.135401 83 23.05 33 - recent info - (23 Dec.)
2005 YR3 2006-02-02 0.010563 62 23.68 9 - risk listed - (1 Jan.)
2005 UR64 2006-02-03 0.090632 63 23.64 59 - (30 Dec.)
2005 YM128 2006-02-14 0.029730 60 23.77 1 - (1 Jan.)
2005 RA3 2006-02-20 0.048596 135 22.00 106 - recent info - (18 Dec.)
2002 LW 2006-02-22 0.034393 110 22.45 2op - (28 Dec.)
2005 CN 2006-02-23 0.029210 87 22.96 2op - "only 1 night at latest opp." - (26 Dec.)
2005 YA37 2006-07-14 0.035774 126 22.15 5 - risk listed - (1 Jan.)
Viewing by designation order - see also Viewing by date order
Object View until MOID AU Dia H Arc Notes (calc date)
---------- ---------- -------- --- ----- --- - -----------------------
2005 YU128 2006-01-18 0.022503 33 25.06 1 - (1 Jan.)
2005 YO128 2006-01-13 0.014015 45 24.36 1 - (31 Dec.)
2005 YN128 2006-01-19 0.019082 50 24.14 1 - (1 Jan.)
2005 YM128 2006-02-14 0.029730 60 23.77 1 - (1 Jan.)
2005 YU55 2006-01-10 0.000983 129 22.09 1 - risk listed - (29 Dec.)
2005 YA37 2006-07-14 0.035774 126 22.15 5 - risk listed - (1 Jan.)
2005 YU8 2006-01-23 0.024987 56 23.89 5 - (30 Dec.)
2005 YR3 2006-02-02 0.010563 62 23.68 9 - risk listed - (1 Jan.)
2005 YO3 2006-01-09 0.016497 32 25.14 4 - (27 Dec.)
2005 YY1 2006-01-22 0.032165 79 23.17 6 - (30 Dec.)
2005 YD 2006-01-15 0.021876 42 24.53 4 - recent info - (25 Dec.)
2005 XX77 2006-01-21 0.031635 58 23.85 20 - (31 Dec.)
2005 XL4 2006-01-19 0.213508 94 22.79 24 - (29 Dec.)
2005 XC1 2006-01-04 0.038985 62 23.70 6 - recent info - (14 Dec.)
2005 XC 2006-01-23 0.007944 94 22.79 30 - (1 Jan.)
2005 WP57 2006-01-11 0.110490 74 23.30 24 - recent info - (25 Dec.)
2005 WK56 2006-01-27 0.030957 105 22.54 26 - (26 Dec.)
2005 WF55 2006-01-02 0.025962 18 26.34 23 - recent info - (24 Dec.)
2005 WC2 2006-01-26 0.247806 111 22.42 29 - recent info - (22 Dec.)
2005 VD7 2006-01-02 0.019187 130 22.08 25 - recent info - (14 Dec.)
2005 VH1 2006-01-30 0.135401 83 23.05 33 - recent info - (23 Dec.)
2005 VS 2006-01-19 0.016823 122 22.21 48 - recent info - (22 Dec.)
2005 UR64 2006-02-03 0.090632 63 23.64 59 - (30 Dec.)
2005 SD71 2006-01-04 0.082214 78 23.18 65 - recent info - (14 Dec.)
2005 ST4 2006-01-18 0.075147 114 22.36 89 - recent info - (24 Dec.)
2005 RA3 2006-02-20 0.048596 135 22.00 106 - recent info - (18 Dec.)
2005 CN 2006-02-23 0.029210 87 22.96 2op - "only 1 night at latest opp." - (26 Dec.)
2003 YT70 2006-01-26 0.053689 26 25.55 22 - bright recov. poss. - (15 Dec.)
2003 WP25 2006-01-13 0.023076 45 24.38 3op - (28 Dec.)
2002 LW 2006-02-22 0.034393 110 22.45 2op - (28 Dec.)
2002 JD9 2006-01-29 0.053416 111 22.42 9 - bright recov. poss. - (15 Dec.)
2001 XX4 2006-01-03 0.011334 133 22.03 2op - (28 Dec.)
2001 WW1 2006-01-11 0.108251 142 21.89 2op - MPC H=22.1 - (28 Dec.)
Out-of-view date based on MPES solar elongation <40° and/or magnitude V>22.0 at 1200 UT.
(Not factored in is any lunar interference with viewing.)
Objects are linked in the left-most column only if observed in the last seven days,
while objects with earlier small-object reporting are linked under "Notes."
Diameter ("Dia") is in meters, a very rough estimate from brightness (H).
Observing "Arc" is from MPES in whole days or number of oppositions.
Small object observation cross index [ size order | 48 Hours | Viewing | top ]
| Object | Observed by MPC code |
|---|
| 2002 LW | 413 |
| 2005 CN | 291 |
| 2005 UR64 | 448 |
| 2005 VA | 291 |
| 2005 WG57 | 291 |
| 2005 WK56 | 170 |
| 2005 XC | 291, 448 |
| 2005 XL4 | 715 |
| 2005 XN | 204 |
| 2005 XO4 | J95 |
| 2005 XX77 | 448 |
| 2005 XZ7 | 204 |
| 2005 YA37 | 734, G96, J77, J95 |
| 2005 YM128 | G96, J95 |
| 2005 YN128 | G96, J95 |
| 2005 YO3 | J95 |
| 2005 YO128 | 703, H06, J95 |
| 2005 YR3 | 291, 448, 701, 734, J95 |
| 2005 YU8 | 291, 691, 701, 734, J77 |
| 2005 YU55 | 291, 691, 734 |
| 2005 YU128 | 691, 704, 734, 854, J95 |
| 2005 YY1 | 448, 715 |
|
| Code | Observatory | Objects Observed |
|---|
| 170 | Begues Obs. | 2005 WK56 |
| 204 | Schiaparelli Obs. | 2005 XN, 2005 XZ7 |
| 291 | Spacewatch 1.8m telescope | 2005 CN, 2005 VA, 2005 WG57, 2005 XC, 2005 YR3, 2005 YU8, 2005 YU55 |
| 4131 | Australian Natl. Univ. 1m telescope - Rob McNaught | 2002 LW |
| 448 | Desert Moon Obs. | 2005 UR64, 2005 XC, 2005 XX77, 2005 YR3, 2005 YY1 |
| 691 | Spacewatch 0.9m telescope | 2005 YU8, 2005 YU55, 2005 YU128 |
| 701 | Junk Bond Obs. | 2005 YR3, 2005 YU8 |
| 703 | Catalina Sky Survey (CSS) | 2005 YO128 |
| 704 | LINEAR | 2005 YU128 |
| 715 | Jornada Obs. | 2005 XL4, 2005 YY1 |
| 734 | Farpoint Obs. | 2005 YA37, 2005 YR3, 2005 YU8, 2005 YU55, 2005 YU128 |
| 854 | Sabino Canyon Obs. | 2005 YU128 |
| G96 | Mt. Lemmon Survey (MLS) | 2005 YA37, 2005 YM128, 2005 YN128 |
| H062 | New Mexico Skies - Robert Hutsebaut via Rent-A-Scope | 2005 YO128 |
| J77 | Golden Hill Obs. | 2005 YA37, 2005 YU8 |
| J95 | Great Shefford Obs. | 2005 XO4, 2005 YA37, 2005 YM128, 2005 YN128, 2005 YO3, 2005 YO128, 2005 YR3, 2005 YU128 |
|
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