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JPL Small-Body Database Browser
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442720 (2012 VP21)
Classification: Main-belt Asteroid          SPK-ID: 2442720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2270427358984634 5.9891e-08  
a 2.292404901389575 2.6335e-08 au
q 1.771931020791038 1.3383e-07 au
i 1.391013516940904 4.692e-06 deg
node 231.5624003906784 0.00026041 deg
peri 63.87776246151537 0.00026083 deg
M 32.58066756528123 1.4356e-05 deg
tp 2458485.765798571016
(2019-Jan-02.26579857)
4.9421e-05 TDB
period 1267.755254912246
3.47
2.1846e-05
5.981e-08
d
yr
n .2839664821779178 4.8933e-09 deg/d
Q 2.812878781988111 3.2314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      138  
   data-arc span      5695 days (15.59 yr)  
   first obs. used      2004-03-23  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49328  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:01:47  

Additional Information
 Earth MOID = .755789 au 
 Jupiter MOID = 2.3936 au 
 T_jup = 3.562 
[ 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 17.8   n/a MPO440833  

442720 (2012 VP21)          Discovered 2011-Mar-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 VP21 = 2005 WC212 = 2011 FT85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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