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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1440618790928118 3.8908e-08  
a 3.211036220444039 2.3875e-08 au
q 2.74844830869179 1.3487e-07 au
i 4.414824146706572 5.3733e-06 deg
node 220.298488255153 5.2421e-05 deg
peri 52.07182118685159 5.6205e-05 deg
M 23.86468117545671 1.9447e-05 deg
tp 2459257.178106113706
(2021-Feb-11.67810611)
0.00011372 TDB
period 2101.678267994124
5.75
2.344e-05
6.418e-08
d
yr
n .1712916793604141 1.9104e-09 deg/d
Q 3.673624132196288 2.7315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      8834 days (24.19 yr)  
   first obs. used      1997-04-30  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54788  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:11:08  

Additional Information
 Earth MOID = 1.73505 au 
 Jupiter MOID = 1.43542 au 
 T_jup = 3.171 
[ 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 14.66   n/a E2021B10  
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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