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JPL Small-Body Database Browser
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95 Arethusa
Classification: Main-belt Asteroid          SPK-ID: 2000095
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1525872372097024 3.7627e-08  
a 3.065326792033578 1.0142e-08 au
q 2.597597045692294 1.1628e-07 au
i 12.99536706109092 4.4712e-06 deg
node 243.0265829157397 2.0938e-05 deg
peri 153.928284555276 2.6183e-05 deg
M 74.07274849032696 1.5892e-05 deg
tp 2458197.161612840043
(2018-Mar-19.66161284)
8.6016e-05 TDB
period 1960.25964118972
5.37
9.7282e-06
2.663e-08
d
yr
n .1836491413869588 9.1139e-10 deg/d
Q 3.533056538374861 1.1689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2367  
   data-arc span      53556 days (146.63 yr)  
   first obs. used      1872-09-23  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45355  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:02:52  

Additional Information
 Earth MOID = 1.61219 au 
 Jupiter MOID = 1.89126 au 
 T_jup = 3.176 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.0   n/a MPO435695  
diameter diameter 147.969 km 5.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.705 h n/a LCDB (Rev. 2019-January); 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 Bull. 40, 87-88.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.058   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.711   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.61, mean=12.77, max.=20.53) deg.
U-B UB 0.374   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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