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20703 (1999 VC203)
Classification: Main-belt Asteroid          SPK-ID: 2020703
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07908187807519484 3.8552e-08  
a 2.581532931604507 1.0353e-08 au
q 2.377380459060259 9.5534e-08 au
i 10.50976022082481 3.3548e-06 deg
node 114.6744844906351 2.3547e-05 deg
peri 219.0988869874315 3.5795e-05 deg
M 115.4714365677123 2.6942e-05 deg
tp 2458910.555132763690
(2020-Mar-02.05513276)
0.00011324 TDB
period 1515.00801761037
4.15
9.1136e-06
2.495e-08
d
yr
n .2376225048418092 1.4294e-09 deg/d
Q 2.785685404148755 1.1172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1922  
   data-arc span      10299 days (28.20 yr)  
   first obs. used      1993-01-29  
   last obs. used      2021-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:25:32  

Additional Information
 Earth MOID = 1.37407 au 
 Jupiter MOID = 2.49072 au 
 T_jup = 3.396 
[ 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 14.08   n/a E2021B10  
diameter diameter 4.197 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.020 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.276   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20703 (1999 VC203)          Discovered 1999-Nov-08 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VC203 = 1998 KZ56 = 1999 RE241 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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