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136389 (2004 HJ40)
Classification: Main-belt Asteroid          SPK-ID: 2136389
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2530240842305225 4.1302e-08  
a 2.721668429491305 1.1921e-08 au
q 2.033020767540143 1.1522e-07 au
i 12.1951486473363 4.7204e-06 deg
node 206.2332416211129 1.748e-05 deg
peri 199.1878624847702 1.9273e-05 deg
M 359.6123616194859 9.2435e-06 deg
tp 2459002.265938277007
(2020-Jun-01.76593828)
4.2117e-05 TDB
period 1640.027953061066
4.49
1.0775e-05
2.95e-08
d
yr
n .2195084536992618 1.4422e-09 deg/d
Q 3.410316091442467 1.4938e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      11340 days (31.05 yr)  
   first obs. used      1988-10-13  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 16:03:01  

Additional Information
 Earth MOID = 1.04554 au 
 Jupiter MOID = 2.01974 au 
 T_jup = 3.280 
[ 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 15.4   n/a MPO412865  
diameter diameter 5.112 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

136389 (2004 HJ40)          Discovered 2004-Apr-19 by Spacewatch at Kitt Peak
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2004 HJ40 = 1988 TS3 = 2004 GR48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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