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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2999397891685983 5.9782e-08  
a 2.325925177957787 8.8977e-09 AU
q 1.628287670459194 1.3656e-07 AU
i 22.18476121086417 9.4194e-06 deg
node .9273168613420091 1.2208e-05 deg
peri 59.31394673421774 2.1384e-05 deg
M 232.5737545345901 1.4102e-05 deg
tp 2457459.115177291298
(2016-Mar-11.61517729)
5.1891e-05 JED
period 1295.662939937162
3.55
7.4348e-06
2.036e-08
d
yr
n .2778500402407586 1.5944e-09 deg/d
Q 3.02356268545638 1.1567e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      30876 days (84.53 yr)  
   first obs. used      1930-11-12  
   last obs. used      2015-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55041  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:33:24  

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 LCDB (Rev. 2015-May); Warner et al., 2009 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
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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