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30854 (1991 VB)
Classification: Mars-crossing Asteroid          SPK-ID: 2030854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4116602098908774 6.8606e-08  
a 2.237190514108301 1.1441e-08 au
q 1.316228197504598 1.4959e-07 au
i 6.432885861588119 7.0195e-06 deg
node 256.1128423155161 6.8865e-05 deg
peri 135.1061681119454 7.0073e-05 deg
M 253.8993649833563 2.1039e-05 deg
tp 2459560.720448901056
(2021-Dec-12.22044890)
7.3985e-05 TDB
period 1222.229834760536
3.35
9.3757e-06
2.567e-08
d
yr
n .2945436199980609 2.2594e-09 deg/d
Q 3.158152830712004 1.6151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      10466 days (28.65 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62544  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:41:12  

Additional Information
 Earth MOID = .333658 au 
 Jupiter MOID = 2.32181 au 
 T_jup = 3.513 
[ 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 17.35   n/a MPCxxxxx  

30854 (1991 VB)          Discovered 1991-Nov-01 by Helin, E. F. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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