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118309 (1998 VR9)
Classification: Main-belt Asteroid          SPK-ID: 2118309
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1868093055739477 4.1135e-08  
a 2.25730398881492 1.0028e-08 au
q 1.835618598195103 9.3589e-08 au
i 4.649515412207037 4.2857e-06 deg
node 17.61607083014002 5.7502e-05 deg
peri 300.2703757964296 5.8615e-05 deg
M 184.0414878475745 1.1129e-05 deg
tp 2459605.968119605176
(2022-Jan-26.46811960)
3.8674e-05 TDB
period 1238.74952334813
3.39
8.255e-06
2.26e-08
d
yr
n .2906156516831434 1.9367e-09 deg/d
Q 2.678989379434737 1.1902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:56:39  

Additional Information
 Earth MOID = .828011 au 
 Jupiter MOID = 2.62813 au 
 T_jup = 3.595 
[ 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  

118309 (1998 VR9)          Discovered 1998-Nov-10 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1998 VR9 = 2003 AG21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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