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JPL Small-Body Database Browser
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79 Eurynome
Classification: Main-belt Asteroid          SPK-ID: 2000079
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1899579238168014 3.364e-08  
a 2.444635922715434 3.7126e-09 au
q 1.98025795834844 8.2092e-08 au
i 4.612512692301547 4.0319e-06 deg
node 206.5336160177101 5.3222e-05 deg
peri 201.5110121705285 5.4491e-05 deg
M 331.5056008233358 1.3104e-05 deg
tp 2459111.003673074305
(2020-Sep-18.50367307)
5.0909e-05 TDB
period 1396.1102341589
3.82
3.1804e-06
8.707e-09
d
yr
n .2578592944824915 5.8741e-10 deg/d
Q 2.909013887082429 4.4179e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2761  
   data-arc span      57036 days (156.16 yr)  
   first obs. used      1863-10-05  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:16:41  

Additional Information
 Earth MOID = .990903 au 
 Jupiter MOID = 2.478 au 
 T_jup = 3.470 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454484.5 (2008-Jan-19.0) TDB
Reference: JPL 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1907430782048871 3.3982e-08  
q 1.979911315502212 8.3011e-08 au
tp 2454918.643433927085
(2009-Mar-28.14343393)
4.7137e-05 TDB
node 206.7338600414338 5.3073e-05 deg
peri 200.605908833806 5.4316e-05 deg
i 4.616619400458378 4.0384e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2761  
   data-arc span      57036 days (156.16 yr)  
   first obs. used      1863-10-05  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:16:41  

Additional Information
 Jupiter MOID = 2.478 au 
 T_jup = 3.470 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.154747566791213E-15 -2.818910795410284E-15 -1.870182937715533E-14 -5.336961707829287E-15 -7.222604584437882E-15 -1.769092584329398E-16
q -2.818910795410284E-15 6.890757260416303E-15 8.763247409586739E-14 1.584171318086807E-14 2.38684018217057E-14 2.51488492983877E-16
tp -1.870182937715533E-14 8.763247409586739E-14 2.22186725048493E-9 6.553651586779548E-12 5.630094565249429E-10 -3.993748107186512E-13
node -5.336961707829287E-15 1.584171318086807E-14 6.553651586779548E-12 2.816767477852892E-9 -2.805699559386425E-9 -2.165697436771303E-11
peri -7.222604584437882E-15 2.38684018217057E-14 5.630094565249429E-10 -2.805699559386425E-9 2.950199521897117E-9 2.151956355232329E-11
i -1.769092584329398E-16 2.51488492983877E-16 -3.993748107186512E-13 -2.165697436771303E-11 2.151956355232329E-11 1.630852844399877E-11

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 MPO492749 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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.978 h n/a LCDB (Rev. 2019-August); 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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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          Discovered 1863-Sep-14 by Watson, J. C. at Ann Arbor
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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