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21963 (1999 VP207)
Classification: Main-belt Asteroid          SPK-ID: 2021963
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839182257376966 4.8304e-08  
a 2.593818474287008 1.0801e-08 au
q 2.116767982610482 1.2658e-07 au
i 14.7491787048539 3.3827e-06 deg
node 266.4364342071256 1.7755e-05 deg
peri 130.4168555350618 2.2582e-05 deg
M 53.98490325454477 1.0076e-05 deg
tp 2459167.688619030540
(2020-Nov-14.18861903)
4.3373e-05 TDB
period 1525.835783396927
4.18
9.5306e-06
2.609e-08
d
yr
n .2359362677932102 1.4737e-09 deg/d
Q 3.070868965963533 1.2787e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      8843 days (24.21 yr)  
   first obs. used      1997-02-07  
   last obs. used      2021-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:38:16  

Additional Information
 Earth MOID = 1.15566 au 
 Jupiter MOID = 2.39354 au 
 T_jup = 3.348 
[ 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 13.72   n/a MPCxxxxx  
diameter diameter 9.956 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21963 (1999 VP207)          Discovered 1999-Nov-13 by CSS at Catalina
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VP207 = 1998 KW43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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