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34 Circe
Classification: Main-belt Asteroid          SPK-ID: 2000034
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 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045977450517884 2.4106e-08  
a 2.687929410051657 6.7407e-09 AU
q 2.40677805490187 6.5075e-08 AU
i 5.497750741555463 2.5952e-06 deg
node 184.4291342496425 3.8885e-05 deg
peri 330.4261765035412 4.2276e-05 deg
M 129.0952169123027 1.7323e-05 deg
tp 2456423.291302603955
(2013-May-10.79130260)
7.7161e-05 JED
period 1609.626878769149
4.41
6.0548e-06
1.658e-08
d
yr
n .2236543168782601 8.4131e-10 deg/d
Q 2.969080765201444 7.4457e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1925  
   data-arc span      55266 days (151.31 yr)  
   first obs. used      1864-04-28  
   last obs. used      2015-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57239  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 13:53:37  

Additional Information
 Earth MOID = 1.41876 AU 
 T_jup = 3.359 
[ 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 8.51 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
diameter diameter 113.54 km 3.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 12.15 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Published Reference List:
[Magnusson, P.; Lagerkvist, C.-I. (1991) Astron. Astrophys. Suppl. Ser. 87, 269-275.]
[Uzpen, B.; Kipp, S. (2003) Minor Planet Bul. 30, 59-61.]
[Pilcher, F. (2008) Minor Planet Bul. 35, 135-138.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0541   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV .707 mag .014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=2.42, mean=12.73, max.=21.25) deg.
U-B UB .357 mag .038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=2.42, mean=12.73, max.=21.25) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

34 Circe          Discovered 1855-Apr-06 by Chacornac, J. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1965 JL 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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