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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 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045977441926379 2.4165e-08  
a 2.687929410397571 6.8147e-09 AU
q 2.406778057520938 6.522e-08 AU
i 5.497750460819511 2.6043e-06 deg
node 184.4291251182471 3.928e-05 deg
peri 330.42618546 4.2704e-05 deg
M 129.0952168054787 1.7445e-05 deg
tp 2456423.291302970163
(2013-May-10.79130297)
7.7743e-05 JED
period 1609.626879079867
4.41
6.1213e-06
1.676e-08
d
yr
n .2236543168350864 8.5055e-10 deg/d
Q 2.969080763274204 7.5275e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1845  
   data-arc span      54911 days (150.34 yr)  
   first obs. used      1864-04-28  
   last obs. used      2014-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58105  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:20  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Vesely, C.D.; Taylor, R.C. (1985) Icarus 64, 37-52.]
[Magnusson, P.; Lagerkvist, C.-I. (1991) Astron. Astrophys. Suppl. Ser. 87, 269-275.]
[Lagerkvist, C.-I.; Erikson, A.; Debehogne, H.; Festin, L.; et al. (1995) Astron. Astrophys. Suppl. Ser. 113, 115-129.]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planetary and Space Sci. 49, 657-671.]
[Uzpen, B.; Kipp, S. (2003) Minor Planet Bul. 30, 59-61.]
[Pilcher, F. (2008) Minor Planet Bul. 35, 135-138.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
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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