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Legend - object IDs plus links to more info

Data compiled at 1841 UTC on 22 June 2017 for thirteen known objects during a period of seven days from 19 to 25 June 2017. Orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
BQ62017 BQ6204.43 LD  departed
BS52017 BS534.86 LDapproaching
CS2017 CS42.21 LD  departed
LB2016 LB65.0 LD  distant
LD2017 LD14.65 LD  departed
LV2017 LV6.91 LD  departed
LX2017 LX12.28 LD  departed
MD2017 MD13.54 LD  departed
MF2017 MF1.02 LDoutbound
NP32008 NP3125.2 LD  distant
NY65441987 2010 NY657.89 LDinbound
WV4418094 2007 WV490.78 LD  departed
XH16484402 2007 XH16103.8 LD  distant
DateTfc.Time
19 June '17Rept. Line
20 June '17Rept. Line
21 June '17Rept. Line
22 June '17Rept. Line
23 June '17Rept. Line
24 June '17 Line
25 June '17 Line

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

2017 MF   -   outbound
Approximate diameter16 meters (H=26.578)
Closest Earth approach1.02 LD at 2232 UT on 19 June 2017
Inside Earth SOI18 to 21 June 2017
Inside ten LD of Earth12 to 26 June 2017
Closest Moon approach1.21 LD at 1232 UT on 20 June 2017
Data based onJPL SSD orbit solution #4 downloaded from JPL on 21 June 2017 UTC
based on 134 observations spanning 3 days
Optical observation  
  • reported from 21 observing codes during 3.1814 days: 104, 106, 160, 203, 474, 587, 595, 703, A17, B74, C43, C95, E23, G34, G96, I52, I93, J04, J95, K88, Y00
  • designation assigned to Catalina Sky Survey observation at 0629 UT 18 June 2017
  • last observed at 1050 UT on 21 June 2017 by Steward Obs. Mt. Lemmon Station
Links  
2017 MD   -     departed
Approximate diameter45 meters (H=24.37)
Closest Earth approach3.16 LD at 0808 UT on 14 June 2017
Inside ten LD of Earth10 to 17 June 2017
Data based onJPL SSD orbit solution #3 downloaded from JPL on 21 June 2017 UTC
based on 84 observations spanning 4 days
Optical observation  
  • reported from 26 observing codes during 3.8232 days: 104, 106, 157, 160, 204, 474, 595, 691, 703, 705, 926, 958, A17, B49, B74, C77, E23, F51, G96, I52, I93, J69, J95, K63, K88, W25
  • designation assigned to Catalina Sky Survey observation at 0831 UT 17 June 2017
  • last observed at 0416 UT on 21 June 2017 by Steward Obs. Mt. Lemmon Station
Links  
2017 LX   -     departed
Approximate diameter19 meters (H=26.206)
Closest Earth approach2.74 LD at 0801 UT on 16 June 2017
Inside ten LD of Earth14 to 18 June 2017
Data based onJPL SSD orbit solution #4 downloaded from JPL on 19 June 2017 UTC
based on 63 observations spanning 2 days
Optical observation  
  • reported from 7 observing codes during 2.1910 days: 204, 734, 926, A17, G96, H21, J95
  • designation assigned to Mt. Lemmon Survey observation at 0538 UT 14 June 2017
  • last observed at 1013 UT on 16 June 2017 by Tenagra II Obs.
Links  
2017 LV   -     departed
Approximate diameter20 meters (H=26.105)
Closest Earth approach6.83 LD at 1330 UT on 18 June 2017
Inside ten LD of Earth15 to 21 June 2017
Data based onJPL SSD orbit solution #5 downloaded from JPL on 19 June 2017 UTC
based on 65 observations spanning 6 days
Optical observation  
  • reported from 8 observing codes during 5.7031 days: 104, 204, 734, 926, A17, G96, J95, W25
  • designation assigned to Mt. Lemmon Survey observation at 0736 UT 13 June 2017
  • last observed at 0028 UT on 19 June 2017 by Great Shefford Obs.
Links  
2017 LD   -     departed
Approximate diameter10 meters (H=27.596)
Closest Earth approach2.99 LD at 1028 UT on 5 June 2017
Inside ten LD of Earth27 May until 14 June 2017
Data based onJPL SSD orbit solution #9 downloaded from JPL on 17 June 2017 UTC
based on 92 observations spanning 31 days
Optical observation  
  • reported from 13 observing codes during 31.3074 days: 291, 587, 703, 926, E23, F51, H01, H21, I52, J95, K88, T14, W25
  • first observed at 0709 UT on 16 May 2017 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0451 UT 2 June 2017
  • last observed at 1432 UT on 16 June 2017 by UH/Tholen NEO Follow-Up CFH Telescope
Notesrisk
Links  
2017 CS   -     departed
Approximate diameter446 meters (H=19.4)
Closest Earth approach7.93 LD at 1543 UT on 29 May 2017
Inside ten LD of Earth26 May until 1 June 2017
Data based onJPL SSD orbit solution #88 downloaded from JPL on 22 June 2017 UTC
based on 938 observations spanning 152 days including radar
Optical observation  
  • reported from 59 observing codes during 152.3377 days: 073, 089, 104, 107, 108, 118, 151, 160, 204, 238, 291, 619, 691, 695, 703, 807, 926, A48, A53, B66, B67, C47, C77, C97, F51, G34, G40, G45, G48, G96, H21, H45, J69, K14, K17, K38, K40, K65, K73, K74, K91, L04, Q62, T05, T08, V83, W08, W25, W33, W34, W85, W88, Y00, Z21, Z43, Z45, Z73, Z80, Z92
  • first observed at 1339 UT on 20 Jan. 2017 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1205 UT 2 Feb. 2017
  • last observed at 2146 UT on 21 June 2017 by Oberfrauendorf Obs.
Radar observation  
  • observed 12 times from one location during 9.3056 days
  • first observed at 2200 UT on 22 May 2017 by Goldstone DSS-14 70m antenna
  • last observed at 0520 UT on 1 June 2017 by Goldstone DSS-14 70m antenna
Notesradar target
Links  
2017 BQ6   -     departed
Approximate diameter178 meters (H=21.4)
Closest Earth approach6.56 LD at 0635 UT on 7 Feb. 2017
Inside ten LD of Earth4 to 10 Feb. 2017
Data based onJPL SSD orbit solution #27 downloaded from JPL on 18 June 2017 UTC
based on 228 observations spanning 130 days including radar
Optical observation  
  • reported from 36 observing codes during 130.0961 days: 046, 104, 107, 113, 204, 246, 300, 474, 695, 705, 718, 807, 900, 926, C43, E23, F65, G34, G40, G45, H06, H21, H36, H45, J69, J95, K51, K88, L04, Q62, T04, T05, W25, W34, Z45, Z80
  • designation assigned to Space Surveillance Telescope Atom Site observation at 0822 UT 26 Jan. 2017
  • last observed at 1040 UT on 5 June 2017 by Spacewatch via Kitt Peak Natl. Obs.
Radar observation  
  • observed 5 times from one location during 1.1597 days
  • first observed at 0040 UT on 6 Feb. 2017 by Goldstone DSS-14 70m antenna
  • last observed at 0430 UT on 7 Feb. 2017 by Goldstone DSS-14 70m antenna
Notesradar target
Links  
2017 BS5   -   approaching
Approximate diameter51 meters (H=24.1)
Closest Earth approach3.12 LD at 1916 UT on 23 July 2017
Inside ten LD of Earth16 to 31 July 2017
Data based onJPL SSD orbit solution #7 downloaded from JPL on 12 June 2017 UTC
based on 73 observations spanning 133 days
Optical observation  
  • reported from one observing code during 0.235 hours: T12
  • first observed at 1219 UT on 27 May 2017 by UH/Tholen NEO Follow-Up 2.24m Telescope
  • last observed at 1233 UT on 27 May 2017 by UH/Tholen NEO Follow-Up 2.24m Telescope
NotesNHATS target
previous passage Jan. 2017 at 6.54 LD
Links  
2016 LB   -     distant
Approximate diameter93 meters (H=22.8)
Distance from Earth43.8 - 54.9 LD min-max during the observation period
Data based onJPL SSD orbit solution #10 downloaded from JPL on 16 June 2017 UTC
based on 127 observations spanning 2016-2017
Optical observation  
  • reported from one observing code during 13.0143 days: 926
  • first observed at 0336 UT on 2 June 2017 by Tenagra II Obs.
  • last observed at 0357 UT on 15 June 2017 by Tenagra II Obs.
Notesprevious passage June 2016 at 5.50 LD
Links  
441987 2010 NY65   -   inbound
Approximate diameter170 meters (H=21.5)
Closest Earth approach7.89 LD at 0637 UT on 24 June 2017
Inside ten LD of Earth22 to 26 June 2017
Data based onJPL SSD orbit solution #68 downloaded from JPL on 12 June 2017 UTC (dated 6 April 2017 local)
based on 274 observations spanning 2010-2016 including radar
Optical observation  
    none recent
Notesradar target
previous observation July-Aug. 2010, observation June-Aug. 2013, observation June-July 2014, observation June-Aug. 2015, and observation June-Aug. 2016
Links  
2008 NP3   -     distant
Approximate diameter74 meters (H=23.3)
Distance from Earth116.4 - 121.5 LD min-max during the observation period
Data based onJPL SSD orbit solution #13 downloaded from JPL on 14 June 2017 UTC
based on 68 observations spanning 2008-2017
Optical observation  
  • reported from one observing code during 23.0025 days: 291
  • first observed at 0725 UT on 22 May 2017 by the Spacewatch 1.8m telescope
  • last observed at 0728 UT on 14 June 2017 by the Spacewatch 1.8m telescope
NotesNHATS target
previous passage July 2008 at 6.87 LD, observation July 2009, and observation July 2010
Links  
484402 2007 XH16   -     distant
Approximate diameter407 meters (H=19.6)
Distance from Earth96.7 - 134.8 LD min-max during the observation period
Data based onJPL SSD orbit solution #68 downloaded from JPL on 20 June 2017 UTC
based on 406 observations spanning 2007-2017 including radar
Optical observation  
  • reported from 10 observing codes during 39.6824 days: 130, 160, 703, C51, D29, F51, G96, H45, T05, T08
  • first observed at 0702 UT on 9 May 2017 by WISE
  • last observed at 2325 UT on 17 June 2017 by Castelmartini Obs.
Notesprevious passage Dec. 2007 at 8.10 LD, observation May-June 2008, observation July 2012, observation Sept. 2016, and observation Dec.-Jan. 2017
Links  
418094 2007 WV4   -     departed
Approximate diameter467 meters (H=19.3)
Closest Earth approach7.96 LD at 1208 UT on 1 June 2017
Inside ten LD of Earth31 May until 2 June 2017
Data based onJPL SSD orbit solution #66 downloaded from JPL on 21 June 2017 UTC
based on 289 observations spanning 2007-2017 including radar
Optical observation  
  • reported from 16 observing codes during 18.3003 days: 160, 203, 703, 926, B66, D29, G40, G96, H45, J69, K38, K78, T05, T08, Z43, Z80
  • first observed at 2209 UT on 1 June 2017 by Northolt Branch Obs.
  • last observed at 0521 UT on 20 June 2017 by Petit Jean Mtn. South Obs.
Notesradar target
previous observation Nov.-Dec. 2007, observation May-July 2008, observation June 2010, observation Jan. 2013, observation Nov.-Dec. 2014, and observation Nov.-Jan. 2017
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.