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77522 (2001 HA54)
Classification: Main-belt Asteroid          SPK-ID: 2077522
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06530250168968126 4.0996e-08  
a 3.040534554576936 2.5222e-08 au
q 2.841980041689142 1.2739e-07 au
i 22.9232554366786 4.9003e-06 deg
node 174.7799541515598 1.1041e-05 deg
peri 38.75413076390785 3.8697e-05 deg
M 230.1321396802869 3.9147e-05 deg
tp 2459699.090260236591
(2022-Apr-29.59026024)
0.00021412 TDB
period 1936.52604321069
5.30
2.4096e-05
6.597e-08
d
yr
n .185899901146247 2.3132e-09 deg/d
Q 3.239089067464731 2.6869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      735  
   data-arc span      7295 days (19.97 yr)  
   first obs. used      2000-02-08  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:07:40  

Additional Information
 Earth MOID = 1.86477 au 
 Jupiter MOID = 1.75508 au 
 T_jup = 3.116 
[ 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 14.5   n/a MPO502623  
diameter diameter 7.735 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

77522 (2001 HA54)          Discovered 2001-Apr-24 by LONEOS at Anderson Mesa
Reference: 20040415/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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