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JPL Small-Body Database Browser
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154752 (2004 PL4)
Classification: Main-belt Asteroid          SPK-ID: 2154752
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1378300598458204 5.8588e-08  
a 3.020996039400143 3.1628e-08 au
q 2.604611974495635 1.7308e-07 au
i 12.02708103663324 6.1128e-06 deg
node 256.4735400268627 3.4078e-05 deg
peri 159.9425753865181 5.351e-05 deg
M 280.4430109330295 3.8338e-05 deg
tp 2459424.337616160310
(2021-Jul-28.83761616)
0.00020549 TDB
period 1917.889849869377
5.25
3.0119e-05
8.246e-08
d
yr
n .187706296075616 2.9477e-09 deg/d
Q 3.437380104304651 3.5987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      362  
   data-arc span      6793 days (18.60 yr)  
   first obs. used      1999-10-09  
   last obs. used      2018-05-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54665  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 05:59:28  

Additional Information
 Earth MOID = 1.62068 au 
 Jupiter MOID = 1.90177 au 
 T_jup = 3.199 
[ 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 MPO412914  
diameter diameter 3.075 km 0.805 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.421 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 0.225   0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154752 (2004 PL4)          Discovered 2004-Aug-05 by NEAT at Palomar
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 PL4 = 2000 YF78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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