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9970 (1992 ST1)
Classification: Main-belt Asteroid          SPK-ID: 2009970
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208458145671763 5.9664e-08  
a 2.789929621996878 2.0311e-08 AU
q 2.208346066440686 1.6895e-07 AU
i 7.534924923737269 7.6452e-06 deg
node 315.0381462572682 5.1867e-05 deg
peri 334.3702994103091 5.5496e-05 deg
M 344.328832517144 2.1043e-05 deg
tp 2457074.594701064907
(2015-Feb-21.09470106)
9.9709e-05 JED
period 1702.112648119394
4.66
1.8588e-05
5.089e-08
d
yr
n .2115018652835649 2.3097e-09 deg/d
Q 3.37151317755307 2.4545e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1182  
   data-arc span      20418 days (55.90 yr)  
   first obs. used      1959-09-28  
   last obs. used      2015-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48228  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:29:24  

Additional Information
 Earth MOID = 1.1962 AU 
 T_jup = 3.285 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO263438  
SMASSII spectral type spec_B Cb   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

9970 (1992 ST1)          Discovered 1992-Sep-26 by Sugie, A. at Dynic
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 ST1 = 1959 SC = 1973 TE = 1987 SU19 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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