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1170 Siva (1930 SQ)
Classification: Mars-crossing Asteroid          SPK-ID: 2001170
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2999397885487423 6.0281e-08  
a 2.325925177990554 8.9405e-09 AU
q 1.628287671923871 1.3766e-07 AU
i 22.18475973420103 9.4702e-06 deg
node .9273160352104295 1.2221e-05 deg
peri 59.31394780769654 2.1492e-05 deg
M 232.5737542482581 1.412e-05 deg
tp 2457459.115178331517
(2016-Mar-11.61517833)
5.1944e-05 JED
period 1295.662939964541
3.55
7.4705e-06
2.045e-08
d
yr
n .2778500402348873 1.602e-09 deg/d
Q 3.023562684057236 1.1622e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      30513 days (83.54 yr)  
   first obs. used      1930-11-12  
   last obs. used      2014-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5528  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:16:03  

Additional Information
 Earth MOID = .724809 AU 
 T_jup = 3.418 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.43 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
diameter diameter 10.37 km 0.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 5. h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submi ssions_results.htm]
geometric albedo albedo 0.1751   0.032 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
B-V BV .864 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=19.15 deg.
U-B UB .452 mag .036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=19.15 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1170 Siva (1930 SQ)          Discovered 1930-Sep-29 by Delporte, E. at Uccle (012)
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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