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379962 (2012 QZ21)
Classification: Main-belt Asteroid          SPK-ID: 2379962
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1780698548276736 5.1768e-08  
a 3.098597682167862 4.8523e-08 au
q 2.546830842734864 1.6273e-07 au
i 4.743068971969009 5.8991e-06 deg
node 292.5905203904508 9.3034e-05 deg
peri 309.5893518891808 9.5906e-05 deg
M 238.9154938320164 2.3247e-05 deg
tp 2459670.588691055883
(2022-Apr-01.08869106)
0.00013505 TDB
period 1992.260912766583
5.45
4.6797e-05
1.281e-07
d
yr
n .1806992235269429 4.2446e-09 deg/d
Q 3.650364521600859 5.7164e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      5049 days (13.82 yr)  
   first obs. used      2005-03-08  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57874  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:44:52  

Additional Information
 Earth MOID = 1.53727 au 
 Jupiter MOID = 1.41898 au 
 T_jup = 3.193 
[ 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 15.7   n/a MPO418934  
diameter diameter 2.862 km 0.989 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

379962 (2012 QZ21)          Discovered 2005-Mar-08 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

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Alternate Designations
 2012 QZ21 = 2005 ES173 = 2010 HT91 = 2011 KW34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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