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21020 (1988 VH2)
Classification: Main-belt Asteroid          SPK-ID: 2021020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .21531699423479 2.2049e-08  
a 2.415819884789218 7.2378e-09 au
q 1.895652808583767 5.3327e-08 au
i 9.577690802499504 4.236e-07 deg
node 75.17505995957318 5.7263e-06 deg
peri 290.7070772367169 5.443e-06 deg
M 281.1319913748553 3.9668e-06 deg
tp 2459696.964819316541
(2022-Apr-27.46481932)
1.6269e-05 TDB
period 1371.498239141148
3.75
6.1635e-06
1.687e-08
d
yr
n .2624866658417565 1.1796e-09 deg/d
Q 2.93598696099467 8.7962e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2188  
   data-arc span      11912 days (32.61 yr)  
   first obs. used      1988-11-08  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45758  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:04:26  

Additional Information
 Earth MOID = .919231 au 
 Jupiter MOID = 2.58249 au 
 T_jup = 3.466 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.02   n/a MPO614063  

21020 (1988 VH2)          Discovered 1988-Nov-08 by Hioki, T., Kawasato, N. at Okutama
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1988 VH2 = 1998 HS113 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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