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20992 (1985 RV2)
Classification: Main-belt Asteroid          SPK-ID: 2020992
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .2415473603813417 3.821e-08  
a 2.336209715358812 8.7067e-09 au
q 1.771904425316645 9.0475e-08 au
i 5.891767683560003 3.9516e-06 deg
node 141.388744131509 4.0213e-05 deg
peri 210.739024475771 4.1263e-05 deg
M 251.5583508722332 1.3088e-05 deg
tp 2459393.379870600541
(2021-Jun-27.87987060)
4.9066e-05 TDB
period 1304.265976714842
3.57
7.2912e-06
1.996e-08
d
yr
n .276017320414016 1.543e-09 deg/d
Q 2.900515005400978 1.081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      12706 days (34.79 yr)  
   first obs. used      1985-09-05  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:59:33  

Additional Information
 Earth MOID = .768981 au 
 Jupiter MOID = 2.5365 au 
 T_jup = 3.521 
[ 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 MPO319347  
diameter diameter 4.099 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20992 (1985 RV2)          Discovered 1985-Sep-05 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 RV2 = 1996 VJ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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