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Legend - object IDs plus links to more info

Data compiled at 1713 UTC on 1 May 2016 for 25 known objects during a period of seven days from 28 April to 4 May 2016. White type highlights objects with just announced discovery, and orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
BA14P/2016 BA14 (Panstarrs)112.15 LD  departed comet
DL462009 DL4628.63 LDapproaching
FH122016 FH1212.51 LD+/- 4 minutes  departed
FY32016 FY313.28 LD  departed
GB2222016 GB22218.51 LD  departed
GC12016 GC115.09 LD  departed
GD2072016 GD2079.03 LD  departed
GD2222016 GD22229.01 LD  departed
GK22016 GK273.35 LD  departed
GS22016 GS223.99 LD+/- one minuteapproaching
GS1342016 GS13470.54 LD  departed intruder
GV2212016 GV22114.86 LD  departed
GW2202016 GW22052.27 LD  departed
GY22016 GY256.54 LD  departed
HA2016 HA16.95 LD  departed
HD32016 HD32.19 LDinbound
HF22016 HF210.07 LD  departed
HF32016 HF325.0 LD+/- 43 minutesapproaching
HK2016 HK4.65 LDpassing
HO2016 HO4.25 LDoutbound
HP62016 HP68.90 LDinbound
HT62016 HT630.7 LD+/- 49 minutes  departed
HU42008 HU46.02 LDoutbound
JG552014 JG5510.5 LD+/- 15.9167 hoursapproaching
US1152014 US1159.4 LD+/- 2.2000 hourspassing
DateTfc.Time
28 April '16Rept. Line
29 April '16Rept. Line
30 April '16Rept. Line
1 May '16Rept. Line
2 May '16Rept. Line
3 May '16 Line
4 May '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 #46 downloaded from JPL on 21 April 2016 UTC (dated 13 April 2016 local)
based on 101 observations spanning 2015-2016
Optical observation  
  • reported from 87 observing codes during 139.8753 days: 152, 160, 204, 213, 215, 291, 349, 367, 461, 467, 470, 474, 568, 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, 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, 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 0912 UT on 19 April 2016 by the Mt. Lemmon Survey
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 HT6   -     departed
Approximate diameter24 meters (H=25.786)
Closest Earth approach5.22 LD at 1419 UT on 15 April 2016 - Note: JPL reports an approach uncertainty of +/- 49 minutes
Inside ten LD of Earth12 to 19 April 2016
Data based onJPL SSD orbit solution #1 downloaded from JPL on 1 May 2016 UTC
based on 18 observations spanning 2 days
Optical observation  
  • reported from 3 observing codes during 2.1158 days: 291, 926, G96
  • designation assigned to Mt. Lemmon Survey observation at 0814 UT 29 April 2016
  • last observed at 1100 UT on 1 May 2016 by the Spacewatch 1.8m telescope
Links  
2016 HP6   -   inbound
Approximate diameter31 meters (H=25.192)
Closest Earth approach8.90 LD at 0353 UT on 2 May 2016
Inside ten LD of Earth28 April until 5 May 2016
Data based onJPL SSD orbit solution #1 downloaded from JPL on 1 May 2016 UTC
based on 63 observations spanning one day
Optical observation  
  • reported from 11 observing codes during 1.6276 days: 104, 246, 291, 300, 595, 691, 703, 926, C43, G96, J95
  • designation assigned to Catalina Sky Survey observation at 0853 UT 29 April 2016
  • last observed at 2357 UT on 30 April 2016 by Great Shefford Obs.
Links  
2016 HF3   -   approaching
Approximate diameter54 meters (H=24.005)
Closest Earth approach8.46 LD at 1622 UT on 18 May 2016 - Note: JPL reports an approach uncertainty of +/- 43 minutes
Inside ten LD of Earth15 to 21 May 2016
Data based onJPL SSD orbit solution #3 downloaded from JPL on 1 May 2016 UTC
based on 16 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 2.1487 days: 568, 926, F51, I93
  • designation assigned to Pan-STARRS 1 observation at 0725 UT 27 April 2016
  • last observed at 1100 UT on 29 April 2016 by David Tholen's team on Mauna Kea
Notesrisk
Links  
2016 HD3   -   inbound
Approximate diameter8 meters (H=28.03)
Closest Earth approach2.19 LD at 0608 UT on 2 May 2016
Inside Earth SOI1 to 2 May 2016
Inside ten LD of Earth25 April until 8 May 2016
Closest Moon approach3.13 LD at 1129 UT on 2 May 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 1 May 2016 UTC
based on 59 observations spanning 3 days
Optical observation  
  • reported from 9 observing codes during 3.5375 days: 204, 291, 568, 703, 926, G96, I52, J69, J95
  • designation assigned to Mt. Lemmon Survey observation at 1012 UT 27 April 2016
  • last observed at 2306 UT on 30 April 2016 by Great Shefford Obs.
Notesrisk, NHATS target
Links  
2016 HF2   -     departed
Approximate diameter20 meters (H=26.173)
Closest Earth approach4.62 LD at 1425 UT on 21 April 2016
Inside ten LD of Earth15 to 27 April 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 1 May 2016 UTC
based on 63 observations spanning 5 days
Optical observation  
  • reported from 11 observing codes during 4.9925 days: 703, 926, 958, B74, F51, G96, H01, H21, K51, Q62, U69
  • designation assigned to Catalina Sky Survey observation at 0458 UT 25 April 2016
  • last observed at 0447 UT on 30 April 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 HO   -   outbound
Approximate diameter24 meters (H=25.75)
Closest Earth approach2.10 LD at 1228 UT on 24 April 2016
Inside Earth SOI23 to 25 April 2016
Inside ten LD of Earth15 April until 3 May 2016
Closest Moon approach1.48 LD at 2343 UT on 24 April 2016
Data based onJPL SSD orbit solution #5 downloaded from JPL on 29 April 2016 UTC
based on 125 observations spanning 8 days
Optical observation  
  • reported from 12 observing codes during 8.1691 days: 926, C43, C47, C77, F51, G40, H06, H15, J69, Q60, Q62, Y00
  • first observed at 0610 UT on 20 April 2016 by Pan-STARRS 1
  • designation assigned to SONEAR observation at 0214 UT 24 April 2016
  • last observed at 1014 UT on 28 April 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 HK   -   passing
Approximate diameter36 meters (H=24.844)
Closest Earth approach4.65 LD at 0127 UT on 1 May 2016
Inside ten LD of Earth25 April until 6 May 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 29 April 2016 UTC
based on 60 observations spanning 16 days
Optical observation  
  • reported from 8 observing codes during 15.9328 days: 695, 705, 926, F51, G96, H01, J95, K51
  • first observed at 1312 UT on 12 April 2016 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 1106 UT 19 April 2016
  • last observed at 1135 UT on 28 April 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 HA   -     departed
Approximate diameter20 meters (H=26.191)
Closest Earth approach6.49 LD at 0856 UT on 22 April 2016
Inside ten LD of Earth19 to 25 April 2016
Data based onJPL SSD orbit solution #5 downloaded from JPL on 26 April 2016 UTC
based on 36 observations spanning 4 days
Optical observation  
  • reported from 4 observing codes during 3.9714 days: 691, 926, G96, J95
  • designation assigned to Mt. Lemmon Survey observation at 0940 UT 17 April 2016
  • last observed at 0859 UT on 21 April 2016 by Tenagra II Obs.
Links  
2016 GD222   -     departed
Approximate diameter22 meters (H=25.949)
Closest Earth approach6.69 LD at 1749 UT on 13 April 2016
Inside ten LD of Earth9 to 17 April 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 27 April 2016 UTC
based on 46 observations spanning 4 days
Optical observation  
  • reported from 9 observing codes during 4.0311 days: 160, 300, 703, 900, 926, F51, G96, H21, J95
  • designation assigned to Catalina Sky Survey observation at 0849 UT 15 April 2016
  • last observed at 0934 UT on 19 April 2016 by Tenagra II Obs.
Links  
2016 GB222   -     departed
Approximate diameter15 meters (H=26.77)
Closest Earth approach4.42 LD at 0224 UT on 21 April 2016
Inside ten LD of Earth17 to 24 April 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 26 April 2016 UTC
based on 69 observations spanning 5 days
Optical observation  
  • reported from 5 observing codes during 5.1359 days: 705, 926, G96, H21, J95
  • designation assigned to Mt. Lemmon Survey observation at 0736 UT 15 April 2016
  • last observed at 1052 UT on 20 April 2016 by Tenagra II Obs.
Notesprevious passage April 2014 at 5.9 LD +/- 1.122 days uncertainty (unobserved)
Links  
2016 GV221   -     departed
Approximate diameter34 meters (H=25.009)
Closest Earth approach8.56 LD at 2300 UT on 21 April 2016
Inside ten LD of Earth19 to 24 April 2016
Data based onJPL SSD orbit solution #9 downloaded from JPL on 27 April 2016 UTC
based on 68 observations spanning 10 days
Optical observation  
  • reported from 5 observing codes during 10.0898 days: 926, F51, G96, H21, J95
  • first observed at 0913 UT on 11 April 2016 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0836 UT 14 April 2016
  • last observed at 1122 UT on 21 April 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 GW220   -     departed
Approximate diameter16 meters (H=26.589)
Closest Earth approach5.66 LD at 2340 UT on 10 April 2016
Inside ten LD of Earth8 to 13 April 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 23 April 2016 UTC
based on 64 observations spanning 7 days
Optical observation  
  • reported from 11 observing codes during 7.1798 days: 104, 291, 474, 568, 703, 926, 958, C77, G96, H01, H36
  • designation assigned to Catalina Sky Survey observation at 0702 UT 13 April 2016
  • last observed at 1121 UT on 20 April 2016 by David Tholen's team on Mauna Kea
Links  
2016 GD207   -     departed
Approximate diameter23 meters (H=25.857)
Closest Earth approach4.43 LD at 1027 UT on 22 April 2016
Inside ten LD of Earth16 to 28 April 2016
Data based onJPL SSD orbit solution #7 downloaded from JPL on 26 April 2016 UTC
based on 38 observations spanning 9 days
Optical observation  
  • reported from 5 observing codes during 8.8636 days: 104, 691, 926, F51, H21
  • designation assigned to Pan-STARRS 1 observation at 0711 UT 10 April 2016
  • last observed at 0355 UT on 19 April 2016 by the Spacewatch 0.9m telescope
NotesNHATS target
Links  
2016 GS134   -     departed intruder
Approximate diameter9 meters (H=27.88)
Closest Earth approach0.52 LD at 0555 UT on 1 April 2016
Inside Earth-Moon system2143 on 31 March until 1407 UT on 1 April 2016
Inside Earth SOI31 March until 2 April 2016
Inside ten LD of Earth28 March until 5 April 2016
Closest Moon approach1.39 LD at 0820 UT on 1 April 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 30 April 2016 UTC
based on 25 observations spanning 24 days
Optical observation  
  • reported from 3 observing codes during 24.1062 days: 568, F51, K92
  • first observed at 1008 UT on 2 April 2016 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1113 UT 5 April 2016
  • last observed at 1240 UT on 26 April 2016 by David Tholen's team on Mauna Kea
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   -   approaching
Approximate diameter86 meters (H=22.976)
Closest Earth approach3.40 LD at 0204 UT on 18 May 2016
Inside ten LD of Earth12 to 23 May 2016
Data based onJPL SSD orbit solution #17 downloaded from JPL on 1 May 2016 UTC
based on 118 observations spanning 30 days
Optical observation  
  • reported from 16 observing codes during 30.5113 days: 246, 691, 703, 754, 807, 926, A17, D29, F51, G40, G96, H01, H15, H21, H36, K14
  • 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 2314 UT on 30 April 2016 by Sencelles Obs.
NotesNHATS target
Links  
2016 GK2   -     departed
Approximate diameter9 meters (H=27.774)
Closest Earth approach3.07 LD at 0133 UT on 27 March 2016
Inside ten LD of Earth22 to 31 March 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 24 April 2016 UTC
based on 22 observations spanning 22 days
Optical observation  
  • reported from 5 observing codes during 22.0838 days: 474, 568, 705, F51, K92
  • first observed at 0640 UT on 28 March 2016 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0902 UT 2 April 2016
  • last observed at 0840 UT on 19 April 2016 by David Tholen's team on Mauna Kea
Notesrisk, NHATS target
Links  
2016 GC1   -     departed
Approximate diameter16 meters (H=26.623)
Closest Earth approach8.83 LD at 1050 UT on 21 April 2016
Inside ten LD of Earth18 to 23 April 2016
Data based onJPL SSD orbit solution #8 downloaded from JPL on 26 April 2016 UTC
based on 31 observations spanning 18 days
Optical observation  
  • reported from 8 observing codes during 18.0055 days: 291, 474, 568, 691, 705, 926, F51, H21
  • designation assigned to Pan-STARRS 1 observation at 0959 UT 1 April 2016
  • last observed at 1007 UT on 19 April 2016 by the Spacewatch 0.9m telescope
NotesNHATS target
Links  
2016 FH12   -     departed
Approximate diameter16 meters (H=26.6)
Closest Earth approach7.87 LD at 0015 UT on 23 April 2016 - Note: JPL reports an approach uncertainty of +/- 4 minutes
Inside ten LD of Earth19 to 26 April 2016
Data based onJPL SSD orbit solution #3 downloaded from JPL on 18 April 2016 UTC
based on 21 observations spanning 12 days
Optical observation  
  • reported from 2 observing codes during 12.0428 days: 807, W84
  • designation assigned to Lori Allen via DECam observation at 0423 UT 28 March 2016
  • last observed at 0524 UT on 9 April 2016 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2016 FY3   -     departed
Approximate diameter245 meters (H=20.7)
Closest Earth approach6.35 LD at 1147 UT on 25 April 2016
Inside ten LD of Earth23 to 27 April 2016
Data based onJPL SSD orbit solution #30 downloaded from JPL on 30 April 2016 UTC
based on 251 observations spanning 37 days
Optical observation  
  • reported from 23 observing codes during 37.0305 days: 104, 113, 160, 246, 291, 560, 568, 691, 703, 705, 711, 926, A17, A48, F51, F65, G45, H06, H21, H45, J69, K38, K65
  • designation assigned to Pan-STARRS 1 observation at 1055 UT 19 March 2016
  • last observed at 1139 UT on 25 April 2016 by Tenagra II Obs.
Notesradar target
Links  
2014 US115   -   passing
Approximate diameter41 meters (H=24.6)
Closest Earth approach9.42 LD at 0154 UT on 1 May 2016 - Note: JPL reports an approach uncertainty of +/- 2.2000 hours
Inside ten LD of Earth29 April until 2 May 2016
Data based onJPL SSD orbit solution #9 downloaded from JPL on 5 April 2016 UTC (dated 7 Jan. 2015 local)
based on 37 observations spanning 12 days
Optical observation  
    none recent
Notesradar target
previous observation Oct.-Nov. 2014
Links  
2014 JG55   -   approaching
Approximate diameter5 meters (H=29.2)
Closest Earth approach7.61 LD at 0032 UT on 8 May 2016 - Note: JPL reports an approach uncertainty of +/- 15.9167 hours
Inside ten LD of Earth5 to 10 May 2016
Data based onJPL SSD orbit solution #3 downloaded from JPL on 5 April 2016 UTC (dated 13 June 2014 local)
based on 40 observations
Optical observation  
    none recent
Notesprevious passage May 2014 at 0.26 LD
Links  
2009 DL46   -   approaching
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 #37 downloaded from JPL on 29 April 2016 UTC
based on 135 observations spanning 2009-2016
Optical observation  
Notesradar target, NHATS target
previous observation Feb.-April 2009
Links  
2008 HU4   -   outbound
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.