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66690 (1999 TH63)
Classification: Main-belt Asteroid          SPK-ID: 2066690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318833031785161 3.5301e-08  
a 3.151356364085979 1.8877e-08 au
q 2.735745077297682 1.106e-07 au
i 1.90379467119419 3.6875e-06 deg
node 128.968446082147 0.00012461 deg
peri 61.33049107161212 0.00012553 deg
M 108.335633806448 1.4756e-05 deg
tp 2458385.587204349490
(2018-Sep-24.08720435)
8.2706e-05 TDB
period 2043.359129921
5.59
1.836e-05
5.027e-08
d
yr
n .1761804837576047 1.583e-09 deg/d
Q 3.566967650874277 2.1367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      10788 days (29.54 yr)  
   first obs. used      1990-03-06  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50129  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:34:53  

Additional Information
 Earth MOID = 1.73675 au 
 Jupiter MOID = 1.38818 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 14.1   n/a MPO347957  
rotation period rot_per 1.15 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

66690 (1999 TH63)          Discovered 1999-Oct-07 by Spacewatch at Kitt Peak
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TH63 = 1990 ED11 = 2000 YE63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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