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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1327673873477173 3.3594e-08  
a 3.14793353361399 1.7665e-08 au
q 2.729990622811793 1.031e-07 au
i 1.904764404141282 3.587e-06 deg
node 128.9774064085207 0.00010178 deg
peri 60.97229704658584 0.00010264 deg
M 143.9373838770871 1.3725e-05 deg
tp 2458384.842447242261
(2018-Sep-23.34244724)
7.5333e-05 TDB
period 2040.030957096818
5.59
1.7172e-05
4.701e-08
d
yr
n .1764679103263797 1.4854e-09 deg/d
Q 3.565876444416187 2.001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1344  
   data-arc span      11234 days (30.76 yr)  
   first obs. used      1990-03-06  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49841  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:13  

Additional Information
 Earth MOID = 1.73047 au 
 Jupiter MOID = 1.38824 au 
 T_jup = 3.194 
[ 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 14.14   n/a E2021B10  
rotation period rot_per 1.15 h n/a LCDB (Rev. 2020-October); 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

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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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