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187820 (1999 TP253)
Classification: Main-belt Asteroid          SPK-ID: 2187820
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03291835795456734 7.8059e-08  
a 3.035777691123386 3.3047e-08 au
q 2.935844874416497 2.4735e-07 au
i 14.40967262722201 9.0286e-06 deg
node 225.8591761552983 2.8723e-05 deg
peri 100.6309321996886 0.00018045 deg
M 43.63122180728986 0.00017232 deg
tp 2458966.347796774956
(2020-Apr-26.84779677)
0.00092709 TDB
period 1931.983329124468
5.29
3.1547e-05
8.637e-08
d
yr
n .1863370115947864 3.0426e-09 deg/d
Q 3.135710507830276 3.4134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      7749 days (21.22 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49455  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:57  

Additional Information
 Earth MOID = 1.96823 au 
 Jupiter MOID = 1.97716 au 
 T_jup = 3.193 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.43   n/a MPCxxxxx  
rotation period rot_per 11.237 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

187820 (1999 TP253)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1999 TP253 = 2004 RU211 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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