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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1838769919880472 3.3113e-08  
a 2.597364781677803 1.0847e-08 au
q 2.119769158527198 8.757e-08 au
i 13.67894399178104 3.657e-06 deg
node 178.7161884441408 2.0032e-05 deg
peri 134.0262568624786 2.3712e-05 deg
M 131.9961296060034 1.4043e-05 deg
tp 2458439.895545369982
(2018-Nov-17.39554537)
5.8263e-05 TDB
period 1528.966070969006
4.19
9.5779e-06
2.622e-08
d
yr
n .2354532300195808 1.475e-09 deg/d
Q 3.074960404828408 1.2842e-08 au
  Orbit Determination Parameters
   # obs. used (total)      915  
   data-arc span      21676 days (59.35 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:51:48  

Additional Information
 Earth MOID = 1.1309 au 
 Jupiter MOID = 2.36648 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-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 0.310   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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