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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07909748792512653 3.854e-08  
a 2.581025968474407 1.035e-08 au
q 2.376873298098564 9.5487e-08 au
i 10.50998082937195 3.3558e-06 deg
node 114.6737265344318 2.3558e-05 deg
peri 218.957434415138 3.5814e-05 deg
M 69.03409653264612 2.6945e-05 deg
tp 2458910.065547525604
(2020-Mar-01.56554753)
0.00011329 TDB
period 1514.561762119069
4.15
9.1103e-06
2.494e-08
d
yr
n .2376925187232465 1.4297e-09 deg/d
Q 2.785178638850249 1.1169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1911  
   data-arc span      10260 days (28.09 yr)  
   first obs. used      1993-01-29  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:27:31  

Additional Information
 Earth MOID = 1.37223 au 
 Jupiter MOID = 2.49177 au 
 T_jup = 3.397 
[ 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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