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58556 (1997 HH7)
Classification: Outer Main-belt Asteroid          SPK-ID: 2058556
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1430055426098931 4.642e-08  
a 3.207286450899444 2.6968e-08 au
q 2.748626711683211 1.6284e-07 au
i 4.41668998116265 6.1952e-06 deg
node 220.3452847732166 5.3614e-05 deg
peri 52.01217182670248 5.8152e-05 deg
M 315.9658942582437 2.2999e-05 deg
tp 2459257.120727297335
(2021-Feb-11.62072730)
0.00013439 TDB
period 2097.997910275171
5.74
2.6461e-05
7.245e-08
d
yr
n .1715921632890391 2.1642e-09 deg/d
Q 3.665946190115677 3.0824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      8456 days (23.15 yr)  
   first obs. used      1997-04-30  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:50:40  

Additional Information
 Earth MOID = 1.73533 au 
 Jupiter MOID = 1.44462 au 
 T_jup = 3.172 
[ 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 14.7   n/a MPO395547  
diameter diameter 7.052 km 0.575 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58556 (1997 HH7)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 HH7 = 1999 TM140 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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