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JPL Small-Body Database Browser
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442083 (2010 SQ21)
Classification: Main-belt Asteroid          SPK-ID: 2442083
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1742519134134251 1.2291e-07  
a 3.082042912151315 5.3881e-08 au
q 2.544991037486664 4.0067e-07 au
i .2792651396461767 1.2431e-05 deg
node 185.6033672708951 0.0021346 deg
peri 173.4703182159382 0.0021349 deg
M 220.9754315460238 3.6322e-05 deg
tp 2459363.712550813096
(2021-May-29.21255081)
0.0002123 TDB
period 1976.316282425089
5.41
5.1826e-05
1.419e-07
d
yr
n .1821570783995429 4.7768e-09 deg/d
Q 3.619094786815967 6.327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      6726 days (18.41 yr)  
   first obs. used      1999-09-14  
   last obs. used      2018-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .813  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:46:03  

Additional Information
 Earth MOID = 1.54057 au 
 Jupiter MOID = 1.83017 au 
 T_jup = 3.204 
[ 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 17.0   n/a MPO437719  

442083 (2010 SQ21)          Discovered 1999-Sep-14 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2010 SQ21 = 1999 RB189 = 2005 WZ128 = 2007 CQ77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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