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79096 (1981 EM20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2079096
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372713827823289 7.8327e-08  
a 3.96107423020844 5.2031e-08 au
q 3.417332093324279 3.284e-07 au
i 8.397506939190153 7.8035e-06 deg
node 4.906575313139837 3.9976e-05 deg
peri 159.130849653633 4.5712e-05 deg
M 357.4323319777178 2.0482e-05 deg
tp 2459021.037816546655
(2020-Jun-20.53781655)
0.00016389 TDB
period 2879.50540826696
7.88
5.6736e-05
1.553e-07
d
yr
n .1250214703422513 2.4634e-09 deg/d
Q 4.504816367092602 5.9174e-08 au
  Orbit Determination Parameters
   # obs. used (total)      383  
   data-arc span      14309 days (39.18 yr)  
   first obs. used      1981-02-13  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:37:48  

Additional Information
 Earth MOID = 2.4265 au 
 Jupiter MOID = .473572 au 
 T_jup = 3.024 
[ show covariance matrix ]

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 14.3   n/a MPO426485  
diameter diameter 9.729 km 1.281 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.030   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

79096 (1981 EM20)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1981 EM20 = 1997 HK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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