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95 Arethusa
Classification: Main-belt Asteroid          SPK-ID: 2000095
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1524544960826849 3.8564e-08  
a 3.064385408425372 1.0316e-08 AU
q 2.59720607518075 1.1835e-07 AU
i 12.99559614726183 4.7053e-06 deg
node 243.0432752488655 2.3475e-05 deg
peri 154.3499592566704 2.8609e-05 deg
M 139.736872632477 1.571e-05 deg
tp 2456239.960063671111
(2012-Nov-08.46006367)
8.4565e-05 JED
period 1959.356696056227
5.36
9.894e-06
2.709e-08
d
yr
n .1837337738067827 9.2779e-10 deg/d
Q 3.531564741669995 1.1889e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      51986 days (142.33 yr)  
   first obs. used      1872-09-23  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59798  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:51:59  

Additional Information
 Earth MOID = 1.6119 AU 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.9 mag n/a MPO256861  
diameter diameter 136.04 km 10.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
rotation period rot_per 8.705 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Carlsson, M.; Lagerkvist, C.-I. (1981) Astron. Astrophys. Suppl. Ser. 45, 1-4.]
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Behrend, R. (2006) 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.]
[Alton, K.B.(2013) Minor Planet Bul. 40, 87-88.]
geometric albedo albedo 0.0698   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
B-V BV .711 mag .018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=6; phase (min.=4.61, mean=12.77, max.=20.53) deg.
U-B UB .374 mag .049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=4.61, mean=11.82, max.=20.53) 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)

95 Arethusa          Discovered 1867-Nov-23 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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