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120960 (1998 VC3)
Classification: Main-belt Asteroid          SPK-ID: 2120960
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2016962063767326 4.1079e-08  
a 2.366142070119477 8.9491e-09 au
q 1.88890019082799 9.6553e-08 au
i .7914665389758145 4.0106e-06 deg
node 312.5509930735768 0.00033648 deg
peri 44.67586804357142 0.00033665 deg
M 60.39974280998903 1.0687e-05 deg
tp 2458977.455128690494
(2020-May-07.95512869)		 3.8969e-05 TDB
period 1329.412178525741
3.64		 7.5421e-06
2.065e-08		 d
yr
n .2707963758833802 1.5363e-09 deg/d
Q 2.843383949410964 1.0754e-08 au
   Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1998-11-10  
   last obs. used      2021-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:18  

Additional Information
 Earth MOID = .883214 au 
 Jupiter MOID = 2.60512 au 
 T_jup = 3.520 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457442.5 (2016-Feb-24.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028742549175654 4.107e-08  
q 1.885614706566227 9.6633e-08 au
tp 2457648.813403824671
(2016-Sep-17.31340382)		 3.6497e-05 TDB
node 312.6847167563852 0.00033681 deg
peri 44.70341436235747 0.00033697 deg
i .7912129626503172 4.0097e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1998-11-10  
   last obs. used      2021-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:18  

Additional Information
 Jupiter MOID = 2.60512 au 
 T_jup = 3.520 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.686726811128148E-15 -3.958029775390419E-15 2.187148150160609E-13 2.322654600149438E-14 -2.655775896367873E-15 -3.489570498776171E-16
q -3.958029775390419E-15 9.33796731795126E-15 -4.691117205568842E-13 -5.634464209509805E-14 1.789385780797479E-14 8.432233844408164E-16
tp 2.187148150160609E-13 -4.691117205568842E-13 1.331997020308894E-9 -8.88262293580159E-12 3.961884504802832E-10 -1.051342226056547E-13
node 2.322654600149438E-14 -5.634464209509805E-14 -8.88262293580159E-12 1.134405012499363E-7 -1.134326435046237E-7 3.696154440307918E-11
peri -2.655775896367873E-15 1.789385780797479E-14 3.961884504802832E-10 -1.134326435046237E-7 1.135485885445791E-7 -3.699577719443113E-11
i -3.489570498776171E-16 8.432233844408164E-16 -1.051342226056547E-13 3.696154440307918E-11 -3.699577719443113E-11 1.607758085544288E-11

[ 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 16.6   n/a MPO439780  
rotation period rot_per 6.36 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

120960 (1998 VC3)          Discovered 1998-Nov-10 by ODAS at Caussols
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ hide close-approach data ]
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
1999-Jun-15 13:08 < 00:01 Eunom 0.0114936851923449 0.0114910445025484 0.0114963258894103 3.72446305313257 3.72446272521029 2451345.047274089 0.800672375081376 132.366331904538 34.0373398212242 6.69049046283467 14161.9218957977 T 15 CATAB v2.0f-lin.ifort 2021-Feb-24 09:26:20 2021-Feb-24 09:26

Alternate Designations
 1998 VC3 = 2000 ER71 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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