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79455 (1997 WH46)
Classification: Main-belt Asteroid          SPK-ID: 2079455
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 .1940627214249991 3.7596e-08  
a 2.976882131883125 1.731e-08 au
q 2.399180284008433 1.1452e-07 au
i 2.418672834754645 5.4753e-06 deg
node 161.6181320077329 8.4848e-05 deg
peri 239.4145163720501 8.6013e-05 deg
M 149.3809401867385 1.4156e-05 deg
tp 2458222.044890402368
(2018-Apr-13.54489040)
7.0404e-05 TDB
period 1876.034781310252
5.14
1.6363e-05
4.48e-08
d
yr
n .1918940968400226 1.6737e-09 deg/d
Q 3.554583979757817 2.0669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      950  
   data-arc span      10491 days (28.72 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55906  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:40:21  

Additional Information
 Earth MOID = 1.40856 au 
 Jupiter MOID = 1.86291 au 
 T_jup = 3.231 
[ 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 14.9   n/a MPO337854  
diameter diameter 5.671 km 0.633 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.308 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.057   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79455 (1997 WH46)          Discovered 1997-Nov-26 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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Alternate Designations
 1997 WH46 = 1991 PP28 = 1997 XD14 = 2002 RZ108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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