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45 Eugenia
Classification: Main-belt Asteroid          SPK-ID: 2000045
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 80 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08332383660827805 2.705e-08  
a 2.720721892248644 5.5416e-09 AU
q 2.494020905842353 7.4566e-08 AU
i 6.603549903104451 3.0654e-06 deg
node 147.6783330496466 2.9149e-05 deg
peri 88.69782748974355 3.3495e-05 deg
M 46.37801540384652 1.7071e-05 deg
tp 2456789.328982097508
(2014-May-11.82898210)
7.7669e-05 JED
period 1639.172478229671
4.49
5.008e-06
1.371e-08
d
yr
n .219623013917855 6.7099e-10 deg/d
Q 2.947422878654935 6.0033e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2335  
   data-arc span      54148 days (148.25 yr)  
   first obs. used      1866-05-19  
   last obs. used      2014-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5382  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:22  

Additional Information
 Earth MOID = 1.495 AU 
 T_jup = 3.344 
[ 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 7.46 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
magnitude slope G 0.07   n/a PDS3 (MPC 17257) Fit
diameter diameter 214.63 km 4.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 5.699 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Harris, A.W.; Young, J. (1979) Icarus 38, 100-105.]
[Debehogne, H.; Zappala, V. (1980) Astron. Astrophys. Suppl. Ser. 40, 257-258.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Taylor, R.C.; Birch, P.V.; Pospieszalska-Surdej, A.; Surdej, J. (1988) Icarus 73, 314-323.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Gil-Hutton, R. (1989) Minor Planet Bul. 16, 16-17.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Behrend, R. (1998) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (1999) Astron. Astrophys. Suppl. Ser. 139, 565-574.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.0398   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV .676 mag .018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=22; phase (min.=.00, mean=13.63, max.=22.83) deg.
U-B UB .274 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=12; phase (min.=3.02, mean=12.35, max.=20.20) deg.
Tholen spectral type spec_T FC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

45 Eugenia          Discovered 1857-Jun-27 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1941 BN 
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