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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09923337368005312 3.5034e-08  
a 1.92087505980618 4.6836e-09 au
q 1.730260147203739 6.8283e-08 au
i 19.63054404487269 4.7271e-06 deg
node 223.6388937002415 1.012e-05 deg
peri 145.6711027368941 2.8297e-05 deg
M 290.6976771743587 2.456e-05 deg
tp 2459187.694202389895
(2020-Dec-04.19420239)		 6.6385e-05 TDB
period 972.4048215513535
2.66		 3.5565e-06
9.737e-09		 d
yr
n .3702161815957102 1.354e-09 deg/d
Q 2.111489972408621 5.1484e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1542  
   data-arc span      10627 days (29.10 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43876  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:47:23  

Additional Information
 Earth MOID = .753424 au 
 Jupiter MOID = 3.22765 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. 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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