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Legend - object IDs plus links to more info

Data compiled at 1720 UTC on 25 June 2016 for eleven known objects during a period of seven days from 22 to 28 June 2016.

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
LA492016 LA4911.01 LD  departed
LB2016 LB69.47 LD  departed
LG2016 LG21.40 LD  departed
LG102016 LG1036.43 LD  departed
LJ82016 LJ818.98 LD  departed
LK492016 LK4924.11 LD  departed
LO482016 LO4820.18 LD  departed
LT102016 LT1012.23 LD  departed
LV2016 LV48.14 LD  departed
MA2016 MA6.17 LD  departed
XZ3782015 XZ37810.3 LD+/- 12 minutes  departed
DateTfc.Time
22 June '16Rept. Line
23 June '16Rept. Line
24 June '16Rept. Line
25 June '16Rept. Line
26 June '16Rept. Line
27 June '16 Line
28 June '16 Line

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

2016 MA   -     departed
Approximate diameter11 meters (H=27.453)
Closest Earth approach2.60 LD at 0433 UT on 19 June 2016
Inside ten LD of Earth14 to 24 June 2016
Data based onJPL SSD orbit solution #2 downloaded from JPL on 21 June 2016 UTC
based on 79 observations spanning 3 days
Optical observation  
  • reported from 8 observing codes during 3.0214 days: 291, 705, 926, G37, G96, H21, H36, I52
  • designation assigned to Mt. Lemmon Survey observation at 0645 UT 16 June 2016
  • last observed at 0716 UT on 19 June 2016 by Kristie Nault via Apache Point Obs.
NotesNHATS target
Links  
2016 LK49   -     departed
Approximate diameter22 meters (H=25.975)
Closest Earth approach3.22 LD at 1616 UT on 16 June 2016
Inside ten LD of Earth14 to 18 June 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 21 June 2016 UTC
based on 69 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 2.1253 days: 705, 926, G96, H21, I52
  • designation assigned to Mt. Lemmon Survey observation at 0501 UT 14 June 2016
  • last observed at 0802 UT on 16 June 2016 by Tenagra II Obs.
Links  
2016 LA49   -     departed
Approximate diameter11 meters (H=27.491)
Closest Earth approach1.47 LD at 0150 UT on 12 June 2016
Inside Earth SOI10 to 13 June 2016
Inside ten LD of Earth3 to 21 June 2016
Closest Moon approach1.56 LD at 0555 UT on 12 June 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 17 June 2016 UTC
based on 47 observations spanning 3 days
Optical observation  
  • reported from 5 observing codes during 3.0745 days: 300, 705, 926, G96, I52
  • designation assigned to Mt. Lemmon Survey observation at 0753 UT 13 June 2016
  • last observed at 0941 UT on 16 June 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 LO48   -     departed
Approximate diameter28 meters (H=25.427)
Closest Earth approach8.35 LD at 2035 UT on 8 June 2016
Inside ten LD of Earth4 to 12 June 2016
Data based onJPL SSD orbit solution #7 downloaded from JPL on 21 June 2016 UTC
based on 106 observations spanning 8 days
Optical observation  
  • reported from 11 observing codes during 7.9440 days: 691, 705, 926, 958, E23, G96, H21, H36, I52, L04, Q62
  • designation assigned to Mt. Lemmon Survey observation at 0825 UT 11 June 2016
  • last observed at 0704 UT on 19 June 2016 by Kristie Nault via Apache Point Obs.
NotesNHATS target
Links  
2016 LT10   -     departed
Approximate diameter15 meters (H=26.78)
Closest Earth approach7.42 LD at 1458 UT on 12 June 2016
Inside ten LD of Earth6 to 19 June 2016
Data based onJPL SSD orbit solution #4 downloaded from JPL on 17 June 2016 UTC
based on 21 observations spanning 10 days
Optical observation  
  • reported from 5 observing codes during 10.0128 days: 568, 705, 926, F51, H21
  • designation assigned to Pan-STARRS 1 observation at 0729 UT 5 June 2016
  • last observed at 0747 UT on 15 June 2016 by Kristie Nault via Apache Point Obs.
NotesNHATS target
Links  
2016 LG10   -     departed
Approximate diameter27 meters (H=25.519)
Closest Earth approach1.86 LD at 1008 UT on 3 June 2016
Inside Earth SOI2 to 4 June 2016
Inside ten LD of Earth29 May until 8 June 2016
Closest Moon approach1.40 LD at 0507 UT on 3 June 2016
Data based onJPL SSD orbit solution #7 downloaded from JPL on 16 June 2016 UTC
based on 45 observations spanning 9 days
Optical observation  
  • reported from 13 observing codes during 8.9902 days: 104, 461, 474, 568, 691, 695, 705, 926, F51, G96, H21, I52, X13
  • designation assigned to Mt. Lemmon Survey observation at 0915 UT 7 June 2016
  • last observed at 0901 UT on 16 June 2016 by Spacewatch via Kitt Peak Natl. Obs.
Notesrisk
Links  
2016 LJ8   -     departed
Approximate diameter32 meters (H=25.127)
Closest Earth approach6.39 LD at 0738 UT on 13 June 2016
Inside ten LD of Earth9 to 17 June 2016
Data based onJPL SSD orbit solution #6 downloaded from JPL on 16 June 2016 UTC
based on 35 observations spanning 8 days
Optical observation  
  • reported from 6 observing codes during 8.0624 days: 104, 705, 926, G96, H21, I52
  • designation assigned to Mt. Lemmon Survey observation at 0848 UT 4 June 2016
  • last observed at 1017 UT on 12 June 2016 by Tenagra II Obs.
NotesNHATS target
Links  
2016 LV   -     departed
Approximate diameter82 meters (H=23.092)
Closest Earth approach3.61 LD at 2342 UT on 1 June 2016
Inside ten LD of Earth28 May until 5 June 2016
Data based onJPL SSD orbit solution #12 downloaded from JPL on 19 June 2016 UTC
based on 187 observations spanning 14 days
Optical observation  
  • reported from 21 observing codes during 13.8979 days: 089, 157, 204, 300, 470, 474, 718, 900, 926, C42, C95, G40, G96, H21, H36, H45, I52, J22, L04, T05, Z80
  • designation assigned to Mt. Lemmon Survey observation at 1051 UT 3 June 2016
  • last observed at 0824 UT on 17 June 2016 by Tenagra II Obs.
Links  
2016 LG   -     departed
Approximate diameter29 meters (H=25.332)
Closest Earth approach2.94 LD at 1204 UT on 6 June 2016
Inside ten LD of Earth30 May until 13 June 2016
Data based onJPL SSD orbit solution #14 downloaded from JPL on 20 June 2016 UTC
based on 175 observations spanning 17 days
Optical observation  
  • reported from 18 observing codes during 17.3180 days: 089, 160, 204, 291, 300, 474, 691, 703, 705, 926, F51, G96, H21, H36, H45, I52, J04, L51
  • designation assigned to Catalina Sky Survey observation at 0509 UT 2 June 2016
  • last observed at 1247 UT on 19 June 2016 by Pan-STARRS 1
NotesNHATS target
Links  
2016 LB   -     departed
Approximate diameter95 meters (H=22.755)
Closest Earth approach5.50 LD at 0906 UT on 3 June 2016
Inside ten LD of Earth1 to 5 June 2016
Data based onJPL SSD orbit solution #7 downloaded from JPL on 16 June 2016 UTC
based on 118 observations spanning 8 days
Optical observation  
  • reported from 17 observing codes during 7.7231 days: 300, 470, 474, 703, 807, 900, 926, 958, B18, B49, C42, C95, G40, H21, H36, I52, J04
  • designation assigned to Catalina Sky Survey observation at 0729 UT 1 June 2016
  • last observed at 0051 UT on 9 June 2016 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2015 XZ378   -     departed
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  

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.