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300731 (2007 VR142)
Classification: Main-belt Asteroid          SPK-ID: 2300731
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08710872984596257 6.6278e-08  
a 2.785758109714476 2.385e-08 au
q 2.543094259119159 1.977e-07 au
i 4.065090422117196 4.9633e-06 deg
node 199.3641946528967 7.5367e-05 deg
peri 161.1262240254632 8.0336e-05 deg
M 301.9106417162137 2.7996e-05 deg
tp 2459274.535994000991
(2021-Mar-01.03599400)
0.00013305 TDB
period 1698.296568510935
4.65
2.1809e-05
5.971e-08
d
yr
n .2119771108738962 2.7222e-09 deg/d
Q 3.028421960309794 2.5927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      7462 days (20.43 yr)  
   first obs. used      2000-04-10  
   last obs. used      2020-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47978  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:29:54  

Additional Information
 Earth MOID = 1.54032 au 
 Jupiter MOID = 2.38124 au 
 T_jup = 3.322 
[ 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 16.6   n/a MPO437340  
diameter diameter 3.422 km 0.694 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 1.90 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.029   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

300731 (2007 VR142)          Discovered 2007-Nov-04 by Spacewatch at Kitt Peak
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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