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118308 (1998 VT7)
Classification: Main-belt Asteroid          SPK-ID: 2118308
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053241582742623 3.0205e-08  
a 2.288108998144508 8.2564e-09 au
q 2.047115843875172 6.9713e-08 au
i 5.395018246369482 3.5722e-06 deg
node 241.7058903845698 4.1607e-05 deg
peri 201.624521652241 4.6808e-05 deg
M 41.49589795420438 2.039e-05 deg
tp 2458854.781008601518
(2020-Jan-06.28100860)
7.1512e-05 TDB
period 1264.193317646673
3.46
6.8425e-06
1.873e-08
d
yr
n .2847665740475111 1.5413e-09 deg/d
Q 2.529102152413844 9.126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      7783 days (21.31 yr)  
   first obs. used      1998-10-11  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52768  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:56:39  

Additional Information
 Earth MOID = 1.06402 au 
 Jupiter MOID = 2.66234 au 
 T_jup = 3.587 
[ 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 16.2   n/a MPO453654  
rotation period rot_per 1.15 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.]

118308 (1998 VT7)          Discovered 1998-Nov-10 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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