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95 Arethusa (A867 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000095
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529683854144991 1.6597e-08  
a 3.063505031801181 8.0317e-09 au
q 2.59488561337736 5.3258e-08 au
i 12.99670393591313 1.3953e-06 deg
node 243.0160894426719 7.621e-07 deg
peri 153.7420885351048 7.9314e-06 deg
M 184.5238981740074 1.0995e-05 deg
tp 2460155.144777751852
(2023-Jul-29.64477775)
6.1883e-05 TDB
period 1958.512392368178
5.36
7.702e-06
2.109e-08
d
yr
n .1838129804043252 7.2286e-10 deg/d
Q 3.532124450225 9.2603e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3012  
   data-arc span      54220 days (148.45 yr)  
   first obs. used      1872-09-23  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:17:18  

Additional Information
 Earth MOID = 1.60912 au 
 Jupiter MOID = 1.89548 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 8.05   n/a E2021B10  
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. 2020-October); 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 (A867 WA)          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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