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79 Eurynome (A863 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000079
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 121 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902127729463634 2.2072e-08  
a 2.445327662516815 3.0009e-09 au
q 1.980195107067042 5.4606e-08 au
i 4.612211801879581 2.0852e-07 deg
node 206.524657340018 2.9895e-06 deg
peri 201.5411388653803 4.5147e-06 deg
M 73.56895180398278 5.4208e-06 deg
tp 2459111.072321233746
2.0814e-05 TDB
period 1396.702845918331
n .2577498864930716 4.7447e-10 deg/d
Q 2.910460217966587 3.5717e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3054  
   data-arc span      57580 days (157.65 yr)  
   first obs. used      1863-10-05  
   last obs. used      2021-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4851  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:10:22  

Additional Information
 Earth MOID = .990317 au 
 Jupiter MOID = 2.47844 au 
 T_jup = 3.470 
[ 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 7.99   n/a E2021B10 IRAS observations used: 12
magnitude slope G 0.25   n/a PDS3 (MPC 17257) Fit
diameter diameter 63.479 km 0.952 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.978 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Scaltriti, F.; Zappala, V. (1976) Astron. Astrophys. Suppl. Ser. 23, 167-179.]
[Schober, H.J. (1976) Icarus 28, 415-420.]
[Michalowski, T.; Velichko, F.P. (1990) Acta Astronomica 40, 321-332.]
[De Angelis, G. (1993) Planet. Space Sci. 41, 285-290.]
[De Angelis, G.; Mottola, S. (1995) Planet. Space Sci. 43, 1013-1017.]
[Michalowski, T. (1996) Icarus 123, 456-462.]
[Shevchenko, V.G.; Chiorny, V.G.; Kalashnikov, A.V.; Krugly, Yu.N.; et al. (1996) Astron. Astrophys. Suppl. Ser. 115, 475-479.]
[Szabo, Gy.; Sarneczky, K.; Kiss, L.L. (1999) in Proc. IAU Coll. 173, Evolution and Source Regions of Asteroids and Comets, 185-188.]
[Torppa, J.; Hentunen, V.-P.; Paakkonen, P.; Kehusmaa, P.; Muinonen, K. (2008) Icarus 198, 91-107.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.287   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.874   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=17.34, mean=20.18, max.=23.85) deg.
U-B UB 0.421   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=17.34, mean=20.70, max.=23.85) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

79 Eurynome (A863 RA)          Discovered 1863-Sep-14 by Watson, J. C. at Ann Arbor
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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