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59480 (1999 HJ7)
Classification: Main-belt Asteroid          SPK-ID: 2059480
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06658537824308824 3.8597e-08  
a 2.974007588022447 1.7212e-08 au
q 2.775982167876158 1.1152e-07 au
i 10.5080927251628 6.2002e-06 deg
node 44.10649997329176 2.8406e-05 deg
peri 61.35329954493569 6.12e-05 deg
M 149.5670750196596 5.2705e-05 deg
tp 2458222.203575962693
(2018-Apr-13.70357596)
0.00027376 TDB
period 1873.318125774685
5.13
1.6263e-05
4.453e-08
d
yr
n .1921723785441551 1.6683e-09 deg/d
Q 3.172033008168736 1.8358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      10439 days (28.58 yr)  
   first obs. used      1991-11-04  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52175  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:38:03  

Additional Information
 Earth MOID = 1.81082 au 
 Jupiter MOID = 1.98526 au 
 T_jup = 3.233 
[ 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 13.6   n/a MPO395555  
diameter diameter 5.871 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.155   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59480 (1999 HJ7)          Discovered 1999-Apr-19 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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