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90581 (2004 HJ6)
Classification: Main-belt Asteroid          SPK-ID: 2090581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925886863646217 4.0448e-08  
a 3.191067485935129 1.9999e-08 au
q 2.576503990718027 1.2722e-07 au
i 6.081780602895378 4.1979e-06 deg
node 72.42475920900162 3.7012e-05 deg
peri 149.9984882206534 3.851e-05 deg
M 13.38424507813474 9.1674e-06 deg
tp 2459319.090584208710
(2021-Apr-14.59058421)
5.3019e-05 TDB
period 2082.103960453481
5.70
1.9574e-05
5.359e-08
d
yr
n .1729020293115394 1.6254e-09 deg/d
Q 3.805630981152232 2.3851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      8474 days (23.20 yr)  
   first obs. used      1998-04-19  
   last obs. used      2021-07-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52824  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:16:28  

Additional Information
 Earth MOID = 1.5705 au 
 Jupiter MOID = 1.18395 au 
 T_jup = 3.159 
[ 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 15.01   n/a MPO637232  
diameter diameter 5.199 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90581 (2004 HJ6)          Discovered 2004-Apr-17 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2004 HJ6 = 1998 HV131 = 2003 CH5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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