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85128 (1979 HA)
Classification: Main-belt Asteroid          SPK-ID: 2085128
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1849379684970419 6.3438e-08  
a 2.426115543218918 1.6334e-08 au
q 1.977434663316914 1.5409e-07 au
i 24.77980794151712 7.1033e-06 deg
node 48.94606456527825 1.0361e-05 deg
peri 156.4877155850471 1.5852e-05 deg
M 217.8768020030149 1.4125e-05 deg
tp 2459145.414190276930
(2020-Oct-22.91419028)
5.7247e-05 TDB
period 1380.275080102379
3.78
1.3939e-05
3.816e-08
d
yr
n .2608175755613134 2.634e-09 deg/d
Q 2.874796423120921 1.9355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1060  
   data-arc span      14802 days (40.53 yr)  
   first obs. used      1979-04-21  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47414  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:08:40  

Additional Information
 Earth MOID = .984002 au 
 Jupiter MOID = 2.12963 au 
 T_jup = 3.363 
[ 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 MPO325049  
diameter diameter 5.299 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85128 (1979 HA)          Discovered 1979-Apr-21 by Zelinsky, D. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1979 HA = 2000 XW42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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