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JPL Small-Body Database Browser
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11904 (1991 TR1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2011904
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09945386947280867 4.6007e-08  
a 1.920410953172356 5.7765e-09 au
q 1.729418652901401 8.7477e-08 au
i 19.63516139100041 6.5451e-06 deg
node 223.6483394433478 1.0605e-05 deg
peri 145.8148634387659 3.2441e-05 deg
M 142.4243639418885 3.021e-05 deg
tp 2458215.933476531799
(2018-Apr-07.43347653)		 8.1002e-05 TDB
period 972.0524257004206
2.66		 4.3858e-06
1.201e-08		 d
yr
n .370350395186349 1.671e-09 deg/d
Q 2.111403253443312 6.351e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1183  
   data-arc span      10065 days (27.56 yr)  
   first obs. used      1991-10-13  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4751  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:58:22  

Additional Information
 Earth MOID = .751829 au 
 Jupiter MOID = 3.2291 au 
 T_jup = 3.848 
[ 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 15.0   n/a MPO358745  
rotation period rot_per 18.233 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2013). Minor Planet Bull. 40, 26-29.]

11904 (1991 TR1)          Discovered 1991-Oct-13 by Lawrence, K. J. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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