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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135587572082108 4.8688e-08  
a 2.688303923959607 1.3513e-08 au
q 2.383023471356798 1.3173e-07 au
i 7.259416156337917 4.2947e-06 deg
node 74.5314377078539 3.7217e-05 deg
peri 301.3352516891417 4.1264e-05 deg
M 137.2190599671466 1.7317e-05 deg
tp 2458386.839859925999
(2018-Sep-25.33985993)
7.7382e-05 TDB
period 1609.963298681197
4.41
1.2139e-05
3.323e-08
d
yr
n .2236075817969853 1.6859e-09 deg/d
Q 2.993584376562417 1.5047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      7547 days (20.66 yr)  
   first obs. used      1999-05-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5509  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:08:00  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2038-Jun-23 15:38 00:02 Europ 0.0252720481629605 0.0252672456094901 0.0252768510221323 2.85925523117852 2.85925508409015 2465598.151287771 1.90760021226536 277.613897074167 44.113891406992 -30.931244415325 45512.3300782029 T 24 CATAB v2.0f-lin.ifort 2020-Jan-29 10:08:28 2020-Jan-29 10:08
2059-Sep-03 15:13 00:03 David 0.0442924473788745 0.0442828978909823 0.0443019974515686 3.70130951505992 3.70130942290937 2473340.133913391 2.94292273976649 539.312452967559 28.6904924669289 28.1433027272284 109355.014000661 T 24 CATAB v2.0f-lin.ifort 2020-Jan-29 10:08:28 2020-Jan-29 10:08

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