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91231 (1999 BP24)
Classification: Main-belt Asteroid          SPK-ID: 2091231
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0301701099325102 2.6982e-08  
a 2.128756868909933 5.8002e-09 au
q 2.064532040155334 5.705e-08 au
i 2.211327284518714 3.0143e-06 deg
node 251.0785330687069 0.00011271 deg
peri 185.7292452846139 0.00014204 deg
M 121.6458607163934 8.6457e-05 deg
tp 2459013.161574062163
(2020-Jun-12.66157406)
0.00027217 TDB
period 1134.455644646723
3.11
4.6366e-06
1.269e-08
d
yr
n .3173328121718734 1.297e-09 deg/d
Q 2.192981697664532 5.9752e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1908  
   data-arc span      14664 days (40.15 yr)  
   first obs. used      1981-05-08  
   last obs. used      2021-07-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:18  

Additional Information
 Earth MOID = 1.07919 au 
 Jupiter MOID = 2.85214 au 
 T_jup = 3.722 
[ 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 15.09   n/a MPO637240  
diameter diameter 2.576 km 0.485 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 79.346 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.351   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91231 (1999 BP24)          Discovered 1999-Jan-18 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 BP24 = 1981 JT4 = 1990 GT = 1995 WX31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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