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20423 (1998 VN7)
Classification: Main-belt Asteroid          SPK-ID: 2020423
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2381580803008757 1.8685e-08  
a 2.661662495002168 1.2053e-08 au
q 2.027766064783613 4.9995e-08 au
i 13.53177102292365 8.107e-07 deg
node 56.20900669485701 2.9237e-06 deg
peri 225.9911710209505 5.5286e-06 deg
M 108.2230849421408 5.1983e-06 deg
tp 2458723.690046035440
(2019-Aug-28.19004604)
2.1011e-05 TDB
period 1586.09028303907
4.34
1.0773e-05
2.949e-08
d
yr
n .2269732081771617 1.5417e-09 deg/d
Q 3.295558925220724 1.4923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2646  
   data-arc span      25329 days (69.35 yr)  
   first obs. used      1951-11-04  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:20  

Additional Information
 Earth MOID = 1.0345 au 
 Jupiter MOID = 1.91883 au 
 T_jup = 3.306 
[ 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 13.10   n/a MPCxxxxx  
diameter diameter 7.167 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.31756 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.262   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20423 (1998 VN7)          Discovered 1998-Nov-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 VN7 = 1971 KW = 1999 XU195 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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