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JPL Small-Body Database Browser
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393378 (1999 VR138)
Classification: Main-belt Asteroid          SPK-ID: 2393378
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1695361245210769 7.5869e-08  
a 3.16131706763539 6.2802e-08 au
q 2.625359623606151 2.4502e-07 au
i 16.70957522619229 1.4062e-05 deg
node 63.766577062842 2.4373e-05 deg
peri 282.43672195941 6.1303e-05 deg
M 290.412528646271 6.7543e-05 deg
tp 2459397.352449915347
(2021-Jul-01.85244992)
0.00039178 TDB
period 2053.05465467052
5.62
6.1179e-05
1.675e-07
d
yr
n .1753484736419614 5.2252e-09 deg/d
Q 3.69727451166463 7.345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      7139 days (19.55 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59348  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:09:50  

Additional Information
 Earth MOID = 1.68277 au 
 Jupiter MOID = 2.00579 au 
 T_jup = 3.117 
[ 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 16.0   n/a MPO437611  

393378 (1999 VR138)          Discovered 1999-Nov-09 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-05-15

Alternate Designations
 1999 VR138 = 2010 OB108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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