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802 Epyaxa (A915 FJ)
Classification: Main-belt Asteroid          SPK-ID: 2000802
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07845234757491767 2.9952e-08  
a 2.197078243204682 4.7299e-09 au
q 2.024712297219499 6.521e-08 au
i 5.20100941914544 4.1402e-06 deg
node 7.782013080033164 3.0126e-05 deg
peri 116.13319930735 3.9399e-05 deg
M 164.3951516399059 2.5866e-05 deg
tp 2458457.308186000398
(2018-Dec-04.80818600)
8.5125e-05 TDB
period 1189.506205561286
3.26
3.8412e-06
1.052e-08
d
yr
n .3026465926086772 9.7731e-10 deg/d
Q 2.369444189189866 5.101e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3085  
   data-arc span      38490 days (105.38 yr)  
   first obs. used      1915-03-21  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:22:34  

Additional Information
 Earth MOID = 1.04607 au 
 Jupiter MOID = 2.65922 au 
 T_jup = 3.659 
[ 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 12.8   n/a MPO473773  
diameter diameter 7.423 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.392 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Bennefeld, C.; Aguilar, V.; Cooper, T.; Hupp, W.; et al. (2009) Minor Planet Bull. 36, 123-124.]
[Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Warner, B.D (2012) Minor Planet Bull. 39, 69-80.]
[Stephens, R.D. (2015) Minor Planet Bull. 42, 104-106.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
geometric albedo albedo 0.292   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

802 Epyaxa (A915 FJ)          Discovered 1915-Mar-20 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A915 FJ = 1930 YK = 1931 AX = 1970 AM1 = 1972 XW = 1977 FG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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