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48470 (1991 TC2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2048470
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196681654232127 3.7573e-08  
a 1.921388980554081 6.8897e-09 au
q 1.691459886186797 7.2276e-08 au
i 24.9677998095029 7.3156e-06 deg
node 26.81582229833229 9.9121e-06 deg
peri 55.43236590023 3.8321e-05 deg
M 210.5032654671732 3.2935e-05 deg
tp 2459404.471359608132
(2021-Jul-08.97135961)
8.8598e-05 TDB
period 972.7950908987503
2.66
5.2323e-06
1.433e-08
d
yr
n .3700676569691584 1.9905e-09 deg/d
Q 2.151318074921365 7.7141e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1088  
   data-arc span      10664 days (29.20 yr)  
   first obs. used      1990-02-28  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44333  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:38:44  

Additional Information
 Earth MOID = .7579 au 
 Jupiter MOID = 3.13653 au 
 T_jup = 3.802 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO474363  
rotation period rot_per 10.504 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 235-241.]
[Stephens, R.D. (2016) Minor Planet Bull. 43, 158-159.]

48470 (1991 TC2)          Discovered 1991-Oct-10 by Lawrence, K. J. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 TC2 = 1998 HG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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