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19923 (1978 VA8)
Classification: Main-belt Asteroid          SPK-ID: 2019923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1043988526520464 4.1127e-08  
a 3.168822655152608 1.7553e-08 au
q 2.838001205696865 1.2737e-07 au
i 1.679072764099417 4.8127e-06 deg
node 45.65225321256296 0.00012262 deg
peri 146.6398309702857 0.0001244 deg
M 68.51424027025803 1.9247e-05 deg
tp 2458808.375774441124
(2019-Nov-20.87577444)
0.00011097 TDB
period 2060.370525081556
5.64
1.712e-05
4.687e-08
d
yr
n .1747258542177748 1.4518e-09 deg/d
Q 3.499644104608351 1.9386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1418  
   data-arc span      21826 days (59.76 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52373  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:09:18  

Additional Information
 Earth MOID = 1.83712 au 
 Jupiter MOID = 1.45426 au 
 T_jup = 3.194 
[ 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 13.96   n/a E2021B10  
diameter diameter 8.076 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.090   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19923 (1978 VA8)          Discovered 1978-Nov-06 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1978 VA8 = 1978 WP12 = 1999 RE71 = 2000 VM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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