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66861 (1999 VN31)
Classification: Main-belt Asteroid          SPK-ID: 2066861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2908041713096134 5.8194e-08  
a 2.749376427349008 1.4449e-08 au
q 1.949846293775594 1.65e-07 au
i 1.799518518124762 5.7281e-06 deg
node 210.2001214724233 0.00012241 deg
peri 168.3065606865472 0.00012255 deg
M 203.0909926204517 7.0586e-06 deg
tp 2459726.263475560150
(2022-May-26.76347556)
3.6485e-05 TDB
period 1665.136091069995
4.56
1.3127e-05
3.594e-08
d
yr
n .2161985449301436 1.7044e-09 deg/d
Q 3.548906560922422 1.8651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      723  
   data-arc span      12639 days (34.60 yr)  
   first obs. used      1985-09-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53344  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:04:28  

Additional Information
 Earth MOID = .95206 au 
 Jupiter MOID = 1.91629 au 
 T_jup = 3.283 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436249  

66861 (1999 VN31)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1910-Jul-28 17:06 00:02 Jupiter 1.9045926253692 1.90459218605415 1.90459306469995 0.982563278265156 0.275640902334602 2418881.212279550 2.43038521938604 11139.1974946187 1055.88138087711 0.758027197433671 1028374.6118854 T 20 CATAB v2.0f-lin.ifort 2020-May-20 13:04:43 2020-May-20 13:04
1969-Dec-18 07:05 00:01 Jupiter 1.9049743118885 1.90497387380238 1.90497474999077 0.998218007165258 0.327360221397377 2440573.795165219 1.08072084806133 6802.72388292986 821.748899350099 1.78341370932017 1046338.38254443 T 20 CATAB v2.0f-lin.ifort 2020-May-20 13:04:43 2020-May-20 13:04
2029-May-09 05:11 < 00:01 Jupiter 1.90547361360001 1.90547316023158 1.9054740669861 1.01415145902322 0.373445749789604 2462265.716189770 0.329700590107058 4830.78534092038 683.433929330794 3.40614640469845 1060362.44922327 T 20 CATAB v2.0f-lin.ifort 2020-May-20 13:04:43 2020-May-20 13:04
2088-Sep-27 15:12 00:02 Jupiter 1.90624554202255 1.90624504283351 1.90624604123379 1.03060417893432 0.416489537092692 2483957.133037361 1.64365022164035 3831.74931521707 599.403051102273 5.98273155663005 1084503.63785307 T 20 CATAB v2.0f-lin.ifort 2020-May-20 13:04:43 2020-May-20 13:04
2148-Feb-17 16:38 00:03 Jupiter 1.90734760238007 1.90734701042091 1.90734819437132 1.04766150439387 0.45763158372748 2505648.193066854 3.00533759908026 3319.42566682542 546.418616579392 9.59586372056576 1134033.06784614 T 20 CATAB v2.0f-lin.ifort 2020-May-20 13:04:43 2020-May-20 13:04

Alternate Designations
 1999 VN31 = 1985 SG4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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