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JPL Small-Body Database Browser
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277187 (2005 QM21)
Classification: Main-belt Asteroid          SPK-ID: 2277187
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813837085463349 9.1699e-08  
a 2.300352896769345 9.6973e-09 au
q 1.883106357388017 2.1015e-07 au
i 4.803927731881239 9.9542e-06 deg
node 20.84802144178937 6.6304e-05 deg
peri 358.309920251781 6.8698e-05 deg
M 304.0502973308007 1.6583e-05 deg
tp 2458798.554816408393
(2019-Nov-11.05481641)
5.8579e-05 TDB
period 1274.354116385188
3.49
8.0582e-06
2.206e-08
d
yr
n .2824960467198631 1.7863e-09 deg/d
Q 2.717599436150673 1.1456e-08 au
  Orbit Determination Parameters
   # obs. used (total)      260  
   data-arc span      7741 days (21.19 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64306  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 05:22:37  

Additional Information
 Earth MOID = .884572 au 
 Jupiter MOID = 2.74089 au 
 T_jup = 3.565 
[ 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 17.1   n/a MPO440343  

277187 (2005 QM21)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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