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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135587634319795 4.5978e-08  
a 2.688303921652225 1.2356e-08 au
q 2.383023452580057 1.2271e-07 au
i 7.259415077508651 3.7142e-06 deg
node 74.53144227077782 3.5367e-05 deg
peri 301.3352498353209 3.9126e-05 deg
M 137.2190582809641 1.6914e-05 deg
tp 2458386.839868256871
(2018-Sep-25.33986826)
7.5146e-05 TDB
period 1609.96329660844
4.41
1.1099e-05
3.039e-08
d
yr
n .2236075820848702 1.5416e-09 deg/d
Q 2.993584390724393 1.3759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1350  
   data-arc span      7659 days (20.97 yr)  
   first obs. used      1999-05-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52381  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 12:05:21  

Additional Information
 Earth MOID = 1.39473 au 
 Jupiter MOID = 2.47841 au 
 T_jup = 3.352 
[ 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 14.3   n/a MPO333339  
rotation period rot_per 12.2 h n/a LCDB (Rev. 2019-August); 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.]

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

[ show close-approach data ]
Alternate Designations
 2000 QA31 = 1999 JP35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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