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195 Eurykleia (A879 HA)
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04335957919483695 3.4138e-08  
a 2.877101650470962 9.2821e-09 au
q 2.75235173360577 9.9255e-08 au
i 6.970582449028288 4.3409e-06 deg
node 6.973415395523671 2.9971e-05 deg
peri 118.3731836668915 5.8623e-05 deg
M 37.03205842149937 4.9383e-05 deg
tp 2458817.139160674139
(2019-Nov-29.63916067)
0.00024457 TDB
period 1782.50696750325
4.88
8.6261e-06
2.362e-08
d
yr
n .2019627449222543 9.7735e-10 deg/d
Q 3.001851567336153 9.6845e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3297  
   data-arc span      49729 days (136.15 yr)  
   first obs. used      1884-04-22  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41342  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:08:52  

Additional Information
 Earth MOID = 1.77512 au 
 Jupiter MOID = 2.00966 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-August); 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 (A879 HA)          Discovered 1879-Apr-19 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A879 HA = 1949 QB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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