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19922 (1978 VV4)
Classification: Main-belt Asteroid          SPK-ID: 2019922
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003159072315674 4.5193e-08  
a 2.664842166205119 1.3373e-08 au
q 2.397516106673317 1.212e-07 au
i 2.79598406960496 4.86e-06 deg
node 12.84468928458598 8.7096e-05 deg
peri 357.2493452818334 8.9589e-05 deg
M 291.2803529209525 2.2003e-05 deg
tp 2459503.808152718104
(2021-Oct-16.30815272)
9.782e-05 TDB
period 1588.933290837716
4.35
1.1961e-05
3.275e-08
d
yr
n .2265670950919538 1.7055e-09 deg/d
Q 2.932168225736921 1.4715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1016  
   data-arc span      15227 days (41.69 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52615  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:09:15  

Additional Information
 Earth MOID = 1.3954 au 
 Jupiter MOID = 2.5287 au 
 T_jup = 3.375 
[ 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 14.89   n/a E2021B10  
diameter diameter 3.253 km 0.396 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.167   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19922 (1978 VV4)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1978 VV4 = 1999 RS55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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