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JPL Small-Body Database Browser
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74862 (1999 TB91)
Classification: Main-belt Asteroid          SPK-ID: 2074862
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1926606599794694 3.7408e-08  
a 2.240291822103177 7.3974e-09 au
q 1.808675721110171 8.552e-08 au
i 3.108694833584321 3.8022e-06 deg
node 90.96957970734785 7.6594e-05 deg
peri 251.0554564953801 7.7328e-05 deg
M 318.1079254465798 9.7114e-06 deg
tp 2458743.022911012004
(2019-Sep-16.52291101)		 3.2972e-05 TDB
period 1224.772191668229
3.35		 6.0662e-06
1.661e-08		 d
yr
n .2939322124138481 1.4558e-09 deg/d
Q 2.671907923096183 8.8225e-09 au
   Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      10990 days (30.09 yr)  
   first obs. used      1989-09-29  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58172  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:56:21  

Additional Information
 Earth MOID = .802461 au 
 Jupiter MOID = 2.7221 au 
 T_jup = 3.608 
[ 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 16.1   n/a MPO233864  
rotation period rot_per 1.15 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. 237, A19.]

74862 (1999 TB91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TB91 = 1989 TM5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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