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JPL Small-Body Database Browser
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117919 (4537 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428668222130408 5.7882e-08  
a 2.229060673924439 9.2867e-09 au
q 1.910601858920795 1.2514e-07 au
i 6.442881140875325 5.2711e-06 deg
node .6197384921545835 3.8099e-05 deg
peri 52.98803796250357 4.4931e-05 deg
M 182.116014241753 2.0171e-05 deg
tp 2459201.141883613706
(2020-Dec-17.64188361)
6.8385e-05 TDB
period 1215.573606467322
3.33
7.5965e-06
2.08e-08
d
yr
n .296156479611486 1.8508e-09 deg/d
Q 2.547519488928082 1.0614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      20989 days (57.46 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55501  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:37:23  

Additional Information
 Earth MOID = .928483 au 
 Jupiter MOID = 2.80682 au 
 T_jup = 3.622 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO325295  
diameter diameter 1.768 km 0.525 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.594 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.142   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117919 (4537 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

Alternate Designations
 4537 P-L = 1990 TW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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