Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3000779110943888 6.6772e-08  
a 2.325687628305074 7.4852e-09 AU
q 1.627800142945224 1.5385e-07 AU
i 22.18569780742317 1.1988e-05 deg
node .9351852181150573 1.5326e-05 deg
peri 59.30863486883081 2.8227e-05 deg
M 177.002559074507 1.8247e-05 deg
tp 2456163.554101508067
(2012-Aug-24.05410151)
6.4868e-05 JED
period 1295.464453486093
3.55
6.2541e-06
1.712e-08
d
yr
n .2778926114346407 1.3416e-09 deg/d
Q 3.023575113664924 9.7313e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      30186 days (82.64 yr)  
   first obs. used      1930-11-12  
   last obs. used      2013-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54132  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 13:40:10  

Additional Information
 Earth MOID = .723419 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. 2013-Sep-12) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-20 13:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin