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91750 (1999 TR187)
Classification: Main-belt Asteroid          SPK-ID: 2091750
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08699654680347912 3.5505e-08  
a 2.709575963578981 1.5073e-08 au
q 2.4738522114459 9.6657e-08 au
i 11.36051535743128 4.3196e-06 deg
node 313.5414788008066 2.6745e-05 deg
peri 164.1050630665109 4.3184e-05 deg
M 232.3193996388088 3.3069e-05 deg
tp 2459974.293748695895
(2023-Jan-29.79374870)
0.00014933 TDB
period 1629.110052287522
4.46
1.3593e-05
3.722e-08
d
yr
n .220979546160497 1.8439e-09 deg/d
Q 2.945299715712062 1.6384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1249  
   data-arc span      8005 days (21.92 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51949  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:44  

Additional Information
 Earth MOID = 1.49198 au 
 Jupiter MOID = 2.12473 au 
 T_jup = 3.330 
[ 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 14.24   n/a MPO637246  
diameter diameter 3.281 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 37.2038 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.412   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91750 (1999 TR187)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 TR187 = 2001 BR33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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