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61461 (2000 QA31)
Classification: Main-belt Asteroid          SPK-ID: 2061461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1139669814450524 3.8725e-08  
a 2.687346348147489 1.123e-08 au
q 2.381077596751735 1.0577e-07 au
i 7.259989810992442 3.558e-06 deg
node 74.52325286540746 2.988e-05 deg
peri 301.3161254644577 3.3122e-05 deg
M 225.8260169778285 1.6142e-05 deg
tp 2459996.221615087285
(2023-Feb-20.72161509)
7.3568e-05 TDB
period 1609.103170141013
4.41
1.0086e-05
2.761e-08
d
yr
n .2237271087897064 1.4023e-09 deg/d
Q 2.993615099543244 1.251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1593  
   data-arc span      8092 days (22.15 yr)  
   first obs. used      1999-05-10  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:18:45  

Additional Information
 Earth MOID = 1.39202 au 
 Jupiter MOID = 2.48082 au 
 T_jup = 3.353 
[ 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 14.34   n/a E2021B10  
rotation period rot_per 12.2 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

61461 (2000 QA31)          Discovered 2000-Aug-26 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 QA31 = 1999 JP35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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