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JPL Small-Body Database Browser
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195 Eurykleia
Classification: Main-belt Asteroid          SPK-ID: 2000195
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04362852567790801 3.4711e-08  
a 2.877853689384311 1.0007e-08 au
q 2.752297175799745 1.0162e-07 au
i 6.969879748771868 4.6105e-06 deg
node 6.98682092189925 3.2041e-05 deg
peri 118.5996446955926 6.3011e-05 deg
M 316.0449680029727 5.4202e-05 deg
tp 2458818.224645679424
(2019-Nov-30.72464568)
0.0002686 TDB
period 1783.205901201339
4.88
9.3011e-06
2.547e-08
d
yr
n .2018835849283974 1.053e-09 deg/d
Q 3.003410202968877 1.0444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2882  
   data-arc span      49534 days (135.62 yr)  
   first obs. used      1884-04-22  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:38:53  

Additional Information
 Earth MOID = 1.77542 au 
 Jupiter MOID = 2.00949 au 
 T_jup = 3.283 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.2   n/a MPO502154 IRAS observations used: 26
diameter diameter 93.109 km 0.719 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.521 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Garlitz, J. (2013) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.051   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.704   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.17, mean=3.72, max.=4.28) deg.
U-B UB 0.387   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.17, mean=3.72, max.=4.28) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
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)

195 Eurykleia          Discovered 1879-Apr-19 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1949 QB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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