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266941 (2010 ST20)
Classification: Main-belt Asteroid          SPK-ID: 2266941
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .039137594820786 6.7957e-08  
a 2.87567814343022 2.6509e-08 au
q 2.763131017417658 1.9939e-07 au
i 1.272358732043803 7.2858e-06 deg
node 222.1905922518954 0.0002801 deg
peri 65.2679202395486 0.0002978 deg
M 72.17438143727512 9.889e-05 deg
tp 2458643.400360742224
(2019-Jun-08.90036074)
0.00048981 TDB
period 1781.184231478641
4.88
2.4629e-05
6.743e-08
d
yr
n .2021127257011184 2.7947e-09 deg/d
Q 2.988225269442782 2.7546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      5532 days (15.15 yr)  
   first obs. used      2005-08-31  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56988  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:22:34  

Additional Information
 Earth MOID = 1.74706 au 
 Jupiter MOID = 2.06592 au 
 T_jup = 3.295 
[ 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 16.5   n/a MPO450147  

266941 (2010 ST20)          Discovered 2005-Aug-31 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2046-Jul-20 10:43 00:03 Psych 0.0397816143589082 0.0397590762729411 0.0398041524505038 2.8401529806698 2.8401528735847 2468546.946708963 3.35014682515068 1122.77657606785 355.152978005402 -1.91969689141645 5317.61843082468 T 14 CATAB v2.0f-lin.ifort 2020-Nov-11 22:22:34 2020-Nov-11 22:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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