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39628 (1994 PJ24)
Classification: Main-belt Asteroid          SPK-ID: 2039628
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02367071628829907 3.8864e-08  
a 2.783104916510003 2.1481e-08 au
q 2.717226829630725 1.0472e-07 au
i 5.059187491394204 4.9916e-06 deg
node 141.387441644911 5.9351e-05 deg
peri 140.9850676892759 0.00014136 deg
M 160.1855842795052 0.00012758 deg
tp 2457845.905346904270
(2017-Apr-02.40534690)
0.00060258 TDB
period 1695.870925816009
4.64
1.9634e-05
5.375e-08
d
yr
n .2122803065491423 2.4576e-09 deg/d
Q 2.848983003389281 2.1989e-08 au
  Orbit Determination Parameters
   # obs. used (total)      811  
   data-arc span      9407 days (25.75 yr)  
   first obs. used      1993-04-24  
   last obs. used      2019-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54396  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:07:42  

Additional Information
 Earth MOID = 1.70242 au 
 Jupiter MOID = 2.17496 au 
 T_jup = 3.326 
[ 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 14.9   n/a MPO275750  
diameter diameter 6.585 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.532 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 0.041   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39628 (1994 PJ24)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PJ24 = 1994 RL28 = 2000 YH37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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