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Legend - object IDs plus links to more info

Data compiled at 0418 UTC on 29 May 2016 for twelve known objects during a period of seven days from 26 May to 1 June 2016. White type highlights objects with just announced discovery.

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
BA14P/2016 BA14 (Panstarrs)199.25 LD  departed comet
DL462009 DL466.42 LDoutbound
EP842016 EP84118.37 LD  departed
GS22016 GS214.72 LD  departed
GY22016 GY2142.04 LD  departed
HF32016 HF315.00 LD  departed
HU42008 HU411.61 LD  departed
JA62016 JA660.76 LD  departed
JB182016 JB1835.9 LD+/- 14 minutes  departed
KJ2016 KJ7.11 LD  departed
KL2016 KL19.4 LD+/- 1.8167 hoursapproaching
XZ3782015 XZ37810.7 LD+/- 12 minutesapproaching
DateTfc.Time
26 May '16Rept. Line
27 May '16Rept. Line
28 May '16Rept. Line
29 May '16Rept. Line
30 May '16Rept. Line
31 May '16 Line
1 June '16 Line

Object Details - Skychart objects presented in reverse designation order, newest first
  ("designation assigned to" indicates unofficial discovery credit)

P/2016 BA14 (Panstarrs)   -     departed comet
Approximate diameter429 meters (H=19.488)
Closest Earth approach9.21 LD at 1531 UT on 22 March 2016
Inside ten LD of Earth21 to 23 March 2016
Data based onJPL SSD orbit solution #50 downloaded from JPL on 21 May 2016 UTC
based on 114 observations spanning 2015-2016
Optical observation  
  • reported from 90 observing codes during 167.2932 days: 152, 160, 204, 213, 215, 291, 349, 367, 461, 467, 470, 474, 568, 585, 587, 595, 619, 703, 807, 850, 900, 926, 958, 987, A71, A77, B42, B49, B59, B70, C10, C23, C36, C47, C51, C77, D03, D29, D81, D86, D95, F51, G37, G40, G45, G96, H01, H06, H15, H36, H45, H47, I39, I40, I47, I61, I81, I89, J01, J08, J22, J38, J69, J95, K02, K10, K17, K21, K25, K50, K61, K91, K92, L04, L51, P34, Q19, Q62, Q64, Q65, Q68, T05, U69, W85, W86, W88, Y00, Y28, Z39, Z80
  • first observed at 1211 UT on 1 Dec. 2015 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0808 UT 22 Jan. 2016
  • last observed at 1913 UT on 16 May 2016 by Purple Mtn. Obs. Xuyi Station
Radar observation  
  • observed 10 times from 3 locations during 6.1944 days
  • first observed at 0100 UT on 17 March 2016 by Goldstone DSS-14 70m antenna
  • last observed at 0540 UT on 23 March 2016 by Goldstone DSS-14 70m antenna
Notesradar target
Links  
2016 KL   -   approaching
Approximate diameter29 meters (H=25.312)
Closest Earth approach5.77 LD at 0013 UT on 11 June 2016 - Note: JPL reports an approach uncertainty of +/- 1.8167 hours
Inside ten LD of Earth7 to 15 June 2016
Data based onJPL SSD orbit solution #1 downloaded from JPL on 29 May 2016 UTC
based on 14 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.5293 days: 291, F51, J95
  • designation assigned to Pan-STARRS 1 observation at 1104 UT 27 May 2016
  • last observed at 2346 UT on 28 May 2016 by Great Shefford Obs.
Links  
2016 KJ   -     departed
Approximate diameter37 meters (H=24.787)
Closest Earth approach7.11 LD at 0841 UT on 27 May 2016
Inside ten LD of Earth25 to 28 May 2016
Data based onJPL SSD orbit solution #3 downloaded from JPL on 28 May 2016 UTC
based on 44 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.9707 days: 691, 703, 926, J95
  • designation assigned to Catalina Sky Survey observation at 0620 UT 25 May 2016
  • last observed at 0538 UT on 27 May 2016 by Tenagra II Obs.
Links  
2016 JB18   -     departed
Approximate diameter11 meters (H=27.45)
Closest Earth approach1.32 LD at 0322 UT on 13 April 2016 - Note: JPL reports an approach uncertainty of +/- 14 minutes
Inside Earth SOI10 to 15 April 2016
Inside ten LD of Earth30 March until 26 April 2016
Closest Moon approach1.68 LD at 1252 UT on 11 April 2016
Data based onJPL SSD orbit solution #10 downloaded from JPL on 28 May 2016 UTC
based on 23 observations spanning 13 days
Optical observation  
  • reported from 3 observing codes during 12.8980 days: 291, 568, F51
  • designation assigned to Pan-STARRS 1 observation at 1102 UT 5 May 2016
  • last observed at 0835 UT on 18 May 2016 by David Tholen's team on Mauna Kea
Notesrisk, NHATS target
Links  
2016 JA6   -     departed
Approximate diameter18 meters (H=26.358)
Closest Earth approach2.52 LD at 0344 UT on 2 May 2016
Inside ten LD of Earth28 April until 5 May 2016
Data based onJPL SSD orbit solution #13 downloaded from JPL on 28 May 2016 UTC
based on 62 observations spanning 15 days
Optical observation  
  • reported from 13 observing codes during 14.8164 days: 204, 291, 568, 587, 705, 926, F51, H01, H21, H36, I52, J04, J95
  • designation assigned to Pan-STARRS 1 observation at 1359 UT 4 May 2016
  • last observed at 0934 UT on 19 May 2016 by David Tholen's team on Mauna Kea
Notesrisk
Links  
2016 HF3   -     departed
Approximate diameter38 meters (H=24.77)
Closest Earth approach8.49 LD at 1714 UT on 18 May 2016
Inside ten LD of Earth15 to 21 May 2016
Data based onJPL SSD orbit solution #31 downloaded from JPL on 28 May 2016 UTC
based on 281 observations spanning 23 days
Optical observation  
  • reported from 18 observing codes during 23.1001 days: 204, 246, 291, 568, 691, 926, A17, F51, G45, H21, H36, H45, I52, I93, J04, J69, K38, Z62
  • designation assigned to Pan-STARRS 1 observation at 0725 UT 27 April 2016
  • last observed at 0950 UT on 20 May 2016 by Tenagra II Obs.
Notesrisk
Links  
2016 GY2   -     departed
Approximate diameter21 meters (H=26.078)
Closest Earth approach4.33 LD at 1155 UT on 3 April 2016
Inside ten LD of Earth30 March until 7 April 2016
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 April 2016 UTC
based on 20 observations spanning 3 days
Optical observation  
  • reported from 3 observing codes during 2.6942 days: 703, G96, H01
  • first observed at 1045 UT on 2 April 2016 by the Catalina Sky Survey
  • designation assigned to Catalina Sky Survey observation at 1158 UT 2 April 2016
  • last observed at 0325 UT on 5 April 2016 by Magdalena Ridge Obs.
NotesNHATS target
Links  
2016 GS2   -     departed
Approximate diameter84 meters (H=23.024)
Closest Earth approach3.40 LD at 0202 UT on 18 May 2016
Inside ten LD of Earth12 to 23 May 2016
Data based onJPL SSD orbit solution #39 downloaded from JPL on 24 May 2016 UTC
based on 358 observations spanning 47 days including radar
Optical observation  
  • reported from 30 observing codes during 46.6852 days: 160, 204, 246, 691, 703, 705, 754, 807, 926, A17, A53, C47, D29, F51, G40, G45, G96, H01, H15, H21, H36, H45, J69, K14, K38, K61, K74, K92, L04, Z21
  • first observed at 1058 UT on 31 March 2016 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1119 UT 1 April 2016
  • last observed at 0325 UT on 17 May 2016 by Tenagra II Obs.
Radar observation  
  • observed once from one location
  • observed at 0259 UT on 9 May 2016 by Arecibo
Notesradar target, NHATS target
Links  
2016 EP84   -     departed
Approximate diameter11 meters (H=27.4)
Closest Earth approach6.71 LD at 2125 UT on 17 Feb. 2016
Inside ten LD of Earth5 to 29 Feb. 2016
Data based onJPL SSD orbit solution #13 downloaded from JPL on 25 May 2016 UTC
based on 53 observations spanning 79 days
Optical observation  
  • reported from 9 observing codes during 78.6507 days: 291, 309, 474, 568, 705, 807, 926, F51, W84
  • designation assigned to Pan-STARRS 1 observation at 0919 UT 7 March 2016
  • last observed at 0055 UT on 25 May 2016 by Marco Micheli via Cerro Paranal
Notesrisk, NHATS target
Links  
2015 XZ378   -   approaching
Approximate diameter12 meters (H=27.2)
Closest Earth approach9.73 LD at 0439 UT on 13 June 2016 - Note: JPL reports an approach uncertainty of +/- 12 minutes
Inside ten LD of Earth7 to 19 June 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 19 May 2016 UTC (dated 25 Feb. 2016 local)
based on 35 observations spanning 2015-2016
Optical observation  
    none recent
NotesNHATS target
previous observation Dec.-Jan. 2016
Links  
2009 DL46   -   outbound
Approximate diameter170 meters (H=21.5)
Closest Earth approach6.16 LD at 1759 UT on 24 May 2016
Inside ten LD of Earth19 to 30 May 2016
Data based onJPL SSD orbit solution #56 downloaded from JPL on 27 May 2016 UTC
based on 394 observations spanning 2009-2016
Optical observation  
  • reported from 22 observing codes during 141.1908 days: 006, 160, 204, 291, 695, 703, 705, 926, A53, C77, F51, G45, H21, H45, H78, J04, J95, K38, Q62, T05, Y00, Z22
  • first observed at 0512 UT on 7 Jan. 2016 by ESA Optical Ground Station
  • last observed at 0947 UT on 27 May 2016 by Sergio Foglia via iTelescope Obs. Siding Spring
Notesradar target, NHATS target
previous observation Feb.-April 2009
Links  
2008 HU4   -     departed
Approximate diameter8 meters (H=28.2)
Closest Earth approach4.94 LD at 0931 UT on 16 April 2016
Inside ten LD of Earth20 March until 18 May 2016
Data based onJPL SSD orbit solution #22 downloaded from JPL on 28 April 2016 UTC
based on 77 observations spanning 2008-2016
Optical observation  
  • reported from one observing code during 1.0420 days: 568
  • first observed at 1338 UT on 26 April 2016 by David Tholen's team on Mauna Kea
  • last observed at 1439 UT on 27 April 2016 by David Tholen's team on Mauna Kea
NotesNHATS target
previous passage April 2008 at 2.46 LD
Links  

Footnotes

Illustration of ten lunar distances.

1. Ten lunar distances:  A "lunar distance" (LD) is the average distance between Earth and Moon (about 384,400 km., the same as 238,855 miles or nearly ten [9.59] times around Earth's equator). Ten lunar distances has no special astronomical importance but is a useful arbitrary "bubble" within which to organize this reporting. An approach by a small Solar-System body starts to become interesting at less than four LD out from Earth as it encounters our planet's "Hill sphere" (distance indicated by the blue line in this illustration at about 3.9 LD). This is a region within which Earth's gravitational influence can change the orbits of passing objects. The Moon also has a Hill sphere, outlined here as a gray circle. (Earth and Moon are not shown to scale.) The "Earth-Moon system" is generally defined as that region of space within a radius of one lunar distance from Earth, so an object can pass very close to the Moon yet not be described as coming "inside" the E-M system.

2. Data credit:  All data on this page derived from orbit solutions comes from the NASA JPL Solar System Dynamics (SSD) Group through its Horizons system. All information about optical observations comes from the IAU Minor Planet Center (MPC) and info about radar observations comes from JPL SSD. The MPC, NASA, and JPL are not associated with this page or A/CC, and responsibility for the interpretation of this information and its use here rests entirely with A/CC. Important note: Approach times presented here as to-the-minute may have unstated uncertainties of a few minutes, or many minutes or even hours for objects with old or very short observation spans, which is significant because the Earth moves through its own diameter in about seven minutes. Thus actual encounter distances may vary, occasionally by as much as ten lunar distances. See JPL's Close Approach Tables for nominal vs. minimum possible passage distances and times and for their note about uncertainties.

3. Size estimates:  Object diameters are rough approximations derived by standard formula from H, an object's "absolute magnitude" (brightness), where higher numbers represent dimmer (thus usually smaller) objects.