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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .099233374330085 3.5297e-08  
a 1.920875059832732 4.7258e-09 au
q 1.730260145979026 6.8715e-08 au
i 19.63054339543918 4.826e-06 deg
node 223.6388925765178 1.0256e-05 deg
peri 145.6711039984697 2.8611e-05 deg
M 290.6976769310529 2.4958e-05 deg
tp 2459187.694203050975
(2020-Dec-04.19420305)
6.7476e-05 TDB
period 972.4048215715158
2.66
3.5885e-06
9.825e-09
d
yr
n .3702161815880339 1.3662e-09 deg/d
Q 2.111489973686438 5.1948e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      10611 days (29.05 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:31  

Additional Information
 Earth MOID = .753424 au 
 Jupiter MOID = 3.22765 au 
 T_jup = 3.848 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457012.5 (2014-Dec-21.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09942759268119765 3.5297e-08  
q 1.729653982021959 6.8728e-08 au
tp 2457243.212817835064
(2015-Aug-08.71281784)
6.705e-05 TDB
node 223.6709525704968 1.0257e-05 deg
peri 145.6475744574807 2.8548e-05 deg
i 19.62894082882633 4.8258e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      10611 days (29.05 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:31  

Additional Information
 Jupiter MOID = 3.22765 au 
 T_jup = 3.848 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.245854464348334E-15 -2.421396058577728E-15 8.649583952769735E-13 8.047275110220182E-16 3.454300282967921E-13 -5.654389366271779E-15
q -2.421396058577728E-15 4.723553808310524E-15 -1.665906199011515E-12 -1.119802047613634E-15 -6.680561413890763E-13 1.107068024129691E-14
tp 8.649583952769735E-13 -1.665906199011515E-12 4.495676149632544E-9 9.938009149092096E-12 1.792100410561786E-9 1.236233158996868E-11
node 8.047275110220182E-16 -1.119802047613634E-15 9.938009149092096E-12 1.052151781125506E-10 -9.453898194072124E-11 1.030516690839519E-11
peri 3.454300282967921E-13 -6.680561413890763E-13 1.792100410561786E-9 -9.453898194072124E-11 8.15009685338736E-10 -4.615232130656693E-12
i -5.654389366271779E-15 1.107068024129691E-14 1.236233158996868E-11 1.030516690839519E-11 -4.615232130656693E-12 2.328789560636404E-11

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-August); 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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