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91916 (1999 VL31)
Classification: Main-belt Asteroid          SPK-ID: 2091916
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158326794539165 3.9114e-08  
a 3.051036406901898 1.6603e-08 au
q 2.567975592574829 1.2343e-07 au
i 1.462592655247296 4.6233e-06 deg
node 188.0637601053213 0.00015495 deg
peri 231.1368927917801 0.00015574 deg
M 20.6337639436167 1.3648e-05 deg
tp 2459284.930504619663
(2021-Mar-11.43050462)
7.3841e-05 TDB
period 1946.567695873384
5.33
1.5889e-05
4.35e-08
d
yr
n .184940909459856 1.5096e-09 deg/d
Q 3.534097221228967 1.9232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      8153 days (22.32 yr)  
   first obs. used      1998-09-16  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:44  

Additional Information
 Earth MOID = 1.58035 au 
 Jupiter MOID = 1.80532 au 
 T_jup = 3.217 
[ 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 15.18   n/a E2021B10  

91916 (1999 VL31)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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