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Legend - object IDs plus links to more info

Data compiled at 1844 UTC on 21 Nov. 2014 for fourteen known objects during a period of seven days from 18 to 24 Nov. 2014. Orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
MF62014 MF6237.30 LD  departed
SS12014 SS1139.59 LD  departed
UD572014 UD5756.07 LD  departed
UD1762014 UD17688.75 LD  departed
VN2005 VN62.6 LD  distant
WA2014 WA2.23 LDoutbound
WE62014 WE64.33 LDoutbound intruder
WF62014 WF628.10 LD+/- 7 minutes  departed
WJ62014 WJ67.67 LD  departed intruder
WN692014 WN6914.0 LD+/- 41 minutes  departed
WO42014 WO43.95 LDoutbound
WR72014 WR73.00 LDpassing
WS72014 WS74.41 LDpassing
WX42014 WX48.86 LD  departed
DateTfc.Time
18 Nov. '14Rept. Line
19 Nov. '14Rept. Line
20 Nov. '14Rept. Line
21 Nov. '14Rept. Line
22 Nov. '14Rept. Line
23 Nov. '14 Line
24 Nov. '14 Line

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

2014 WN69   -     departed
Approximate diameter8 meters (H=28.007)
Closest Earth approach6.93 LD at 0651 UT on 5 Nov. 2014 - Note: JPL reports an approach uncertainty of +/- 41 minutes
Inside ten LD of Earth28 Oct. until 12 Nov. 2014
Data based onJPL SSD orbit solution #1 downloaded from JPL on 20 Nov. 2014 UTC
based on 8 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.1328 days: 568, F51, G96
  • designation assigned to Pan-STARRS 1 observation at 0841 UT 17 Nov. 2014
  • last observed at 1152 UT on 18 Nov. 2014 by Marco Micheli via Mauna Kea
Links  
2014 WS7   -   passing
Approximate diameter12 meters (H=27.325)
Closest Earth approach4.41 LD at 1950 UT on 21 Nov. 2014
Inside ten LD of Earth16 to 26 Nov. 2014
Data based onJPL SSD orbit solution #1 downloaded from JPL on 20 Nov. 2014 UTC
based on 25 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 1.3437 days: 291, 900, 958, G48, H21, H36, I41
  • designation assigned to Palomar Transient Factory observation at 0526 UT 19 Nov. 2014
  • last observed at 1341 UT on 20 Nov. 2014 by Moriyama Obs.
Links  
2014 WR7   -   passing
Approximate diameter20 meters (H=26.195)
Closest Earth approach3.00 LD at 1202 UT on 21 Nov. 2014
Inside ten LD of Earth16 to 26 Nov. 2014
Data based onJPL SSD orbit solution #2 downloaded from JPL on 21 Nov. 2014 UTC
based on 47 observations spanning one day
Optical observation  
  • reported from 9 observing codes during 1.3952 days: 703, 900, 932, 958, C77, G48, H01, H21, H36
  • designation assigned to Catalina Sky Survey observation at 0218 UT 19 Nov. 2014
  • last observed at 1147 UT on 20 Nov. 2014 by Moriyama Obs.
Links  
2014 WJ6   -     departed intruder
Approximate diameter13 meters (H=27.051)
Closest Earth approach0.87 LD at 1611 UT on 15 Nov. 2014
Inside Earth-Moon system1232-1950 UT on 15 Nov. 2014
Inside Earth SOI14 to 16 Nov. 2014
Inside ten LD of Earth12 to 18 Nov. 2014
Closest Moon approach0.70 LD at 1727 UT on 15 Nov. 2014
Inside one LD of Moon1235-2219 UT on 15 Nov. 2014
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Nov. 2014 UTC
based on 31 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 1.8322 days: 291, 703, G96, H01, H21, H36
  • designation assigned to Catalina Sky Survey observation at 1112 UT 17 Nov. 2014
  • last observed at 0711 UT on 19 Nov. 2014 by the Mt. Lemmon Survey
Links  
2014 WF6   -     departed
Approximate diameter45 meters (H=24.371)
Closest Earth approach2.61 LD at 1026 UT on 11 Nov. 2014 - Note: JPL reports an approach uncertainty of +/- 7 minutes
Inside ten LD of Earth9 to 13 Nov. 2014
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Nov. 2014 UTC
based on 27 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 1.8912 days: 291, 703, 807, D90, G48, H21
  • designation assigned to Catalina Sky Survey observation at 0729 UT 17 Nov. 2014
  • last observed at 0452 UT on 19 Nov. 2014 by ARO Westfield
Notesrisk
Links  
2014 WE6   -   outbound intruder
Approximate diameter3 meters (H=30.272)
Closest Earth approach0.57 LD at 1805 UT on 13 Nov. 2014
Inside Earth-Moon system2257 on 12 Nov. until 1314 UT on 14 Nov. 2014
Inside Earth SOI11 to 16 Nov. 2014
Inside ten LD of Earth3 to 23 Nov. 2014
Closest Moon approach0.48 LD at 1924 UT on 13 Nov. 2014
Inside one LD of Moon0305 on 13 Nov. until 1148 UT on 14 Nov. 2014
Data based onJPL SSD orbit solution #2 downloaded from JPL on 21 Nov. 2014 UTC
based on 23 observations spanning 4 days
Optical observation  
  • reported from 3 observing codes during 4.0522 days: 291, G96, H01
  • designation assigned to Mt. Lemmon Survey observation at 0439 UT 17 Nov. 2014
  • last observed at 0555 UT on 21 Nov. 2014 by Magdalena Ridge Obs.
Notesrisk
Links  
2014 WX4   -     departed
Approximate diameter18 meters (H=26.404)
Closest Earth approach5.57 LD at 0926 UT on 13 Nov. 2014
Inside ten LD of Earth7 to 18 Nov. 2014
Data based onJPL SSD orbit solution #1 downloaded from JPL on 18 Nov. 2014 UTC
based on 19 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 2.2168 days: 703, 711, G96, H01, H21
  • designation assigned to Catalina Sky Survey observation at 0655 UT 16 Nov. 2014
  • last observed at 1207 UT on 18 Nov. 2014 by Magdalena Ridge Obs.
Links  
2014 WO4   -   outbound
Approximate diameter44 meters (H=24.426)
Closest Earth approach3.95 LD at 2135 UT on 20 Nov. 2014
Inside ten LD of Earth18 to 22 Nov. 2014
Data based onJPL SSD orbit solution #3 downloaded from JPL on 20 Nov. 2014 UTC
based on 70 observations spanning 3 days
Optical observation  
  • reported from 8 observing codes during 2.8622 days: 033, 246, 300, 703, C77, G48, H36, O75
  • designation assigned to Catalina Sky Survey observation at 0650 UT 16 Nov. 2014
  • last observed at 0332 UT on 19 Nov. 2014 by Doc Greiner Research Obs. Rancho Hildalgo
Links  
2014 WA   -   outbound
Approximate diameter8 meters (H=28.194)
Closest Earth approach1.89 LD at 1026 UT on 17 Nov. 2014
Inside Earth SOI16 to 18 Nov. 2014
Inside ten LD of Earth12 to 22 Nov. 2014
Closest Moon approach1.84 LD at 1925 UT on 17 Nov. 2014
Data based onJPL SSD orbit solution #2 downloaded from JPL on 17 Nov. 2014 UTC
based on 51 observations
Optical observation  
  • reported from 4 observing codes during 14.554 hours: 246, 300, 474, 703
  • designation assigned to Catalina Sky Survey observation at 0626 UT 16 Nov. 2014
  • last observed at 2059 UT on 16 Nov. 2014 by KLENOT
Notesrisk
Links  
2014 UD176   -     departed
Approximate diameter37 meters (H=24.8)
Closest Earth approach3.94 LD at 0241 UT on 22 Oct. 2014
Inside ten LD of Earth19 to 25 Oct. 2014
Data based onJPL SSD orbit solution #6 downloaded from JPL on 16 Nov. 2014 UTC
based on 43 observations spanning 17 days
Optical observation  
  • reported from 9 observing codes during 16.9981 days: 291, 703, 850, 958, G48, G96, H21, H36, I93
  • designation assigned to Catalina Sky Survey observation at 0429 UT 29 Oct. 2014
  • last observed at 0427 UT on 15 Nov. 2014 by ARO Westfield
Notesrisk
Links  
2014 UD57   -     departed
Approximate diameter23 meters (H=25.8)
Closest Earth approach4.17 LD at 0250 UT on 23 Oct. 2014
Inside ten LD of Earth18 to 27 Oct. 2014
Data based onJPL SSD orbit solution #8 downloaded from JPL on 16 Nov. 2014 UTC
based on 89 observations spanning 21 days
Optical observation  
  • reported from 19 observing codes during 21.2405 days: 151, 160, 291, 300, 461, 568, 900, 932, 958, A48, D90, G40, G48, G96, H01, H21, H36, L04, O75
  • designation assigned to Mt. Lemmon Survey observation at 0412 UT 25 Oct. 2014
  • last observed at 0958 UT on 15 Nov. 2014 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2014 SS1   -     departed
Approximate diameter148 meters (H=21.8)
Closest Earth approach7.04 LD at 2007 UT on 10 Sept. 2014
Inside ten LD of Earth6 to 15 Sept. 2014
Data based onJPL SSD orbit solution #32 downloaded from JPL on 18 Nov. 2014 UTC
based on 263 observations spanning 68 days
Optical observation  
  • reported from 33 observing codes during 67.9482 days: 089, 118, 151, 160, 204, 291, 300, 448, 691, 703, 718, 850, 932, 958, A24, B67, C23, C77, D00, F51, G40, H06, H21, H36, H45, I15, I39, I93, J16, L04, N42, Q62, U69
  • first observed at 0921 UT on 10 Sept. 2014 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1009 UT 19 Sept. 2014
  • last observed at 0806 UT on 17 Nov. 2014 by Pan-STARRS 1
Links  
2014 MF6   -     departed
Approximate diameter234 meters (H=20.8)
Closest Earth approach9.07 LD at 1938 UT on 9 July 2014
Inside ten LD of Earth8 to 11 July 2014
Data based onJPL SSD orbit solution #19 downloaded from JPL on 20 Nov. 2014 UTC
based on 125 observations spanning 154 days
Optical observation  
  • reported from 19 observing codes during 154.0130 days: 204, 291, 474, 493, 675, 703, 807, 844, 958, E23, F51, G40, G96, H21, I47, I52, L04, P25, Q62
  • first observed at 0915 UT on 18 June 2014 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0633 UT 23 June 2014
  • last observed at 0933 UT on 19 Nov. 2014 by Pan-STARRS 1
Links  
2005 VN   -     distant
Approximate diameter89 meters (H=22.9)
Distance from Earth61.3 LD during the observation period
Data based onJPL SSD orbit solution #16 downloaded from JPL on 13 Nov. 2014 UTC
based on 88 observations spanning 2005-2014
Optical observation  
  • reported from one observing code during 0.175 hours: 291
  • first observed at 0253 UT on 13 Nov. 2014 by the Spacewatch 1.8m telescope
  • last observed at 0303 UT on 13 Nov. 2014 by the Spacewatch 1.8m telescope
Notesprevious passage Nov. 2008 at 9.57 LD (unobserved) and observation Nov. 2011
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.