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JPL Small-Body Database Browser
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117922 (4622 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117922
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837823546117043 3.5672e-08  
a 2.59662880182182 1.1327e-08 au
q 2.119414246570437 9.5103e-08 au
i 13.68035648805237 3.9627e-06 deg
node 178.7281140264342 2.0201e-05 deg
peri 133.9256912165831 2.3919e-05 deg
M 37.89959216303168 1.3863e-05 deg
tp 2458439.603992479656
(2018-Nov-17.10399248)
5.8454e-05 TDB
period 1528.316253593435
4.18
9.9998e-06
2.738e-08
d
yr
n .2355533412365108 1.5412e-09 deg/d
Q 3.073843357073202 1.3408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      21613 days (59.17 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52652  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:03:40  

Additional Information
 Earth MOID = 1.12977 au 
 Jupiter MOID = 2.36462 au 
 T_jup = 3.353 
[ 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 15.1   n/a MPO359564  
diameter diameter 2.499 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.678 h n/a LCDB (Rev. 2019-January); 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 0.310   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117922 (4622 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 4622 P-L = 2002 RN62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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