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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09906300794137331 1.3701e-08  
a 1.920478162061591 4.4141e-09 au
q 1.73022981864205 2.6366e-08 au
i 19.63090552037257 8.5574e-07 deg
node 223.6279500273624 2.7707e-06 deg
peri 145.7428532064007 1.4803e-05 deg
M 4.689084556716987 1.274e-05 deg
tp 2459187.838124174735
(2020-Dec-04.33812417)		 3.4392e-05 TDB
period 972.1034547277966
2.66		 3.3515e-06
9.176e-09		 d
yr
n .3703309542303863 1.2768e-09 deg/d
Q 2.110726505481133 4.8513e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1677  
   data-arc span      10714 days (29.33 yr)  
   first obs. used      1991-10-13  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:01:17  

Additional Information
 Earth MOID = .752192 au 
 Jupiter MOID = 3.22669 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 15.07   n/a E2021B10  
rotation period rot_per 18.233 h n/a LCDB (Rev. 2020-October); 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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