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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0238575943779689 3.6559e-08  
a 2.782364932320777 1.741e-08 au
q 2.715984398353983 1.0187e-07 au
i 5.060078607247393 4.8313e-06 deg
node 141.3837584544755 4.5242e-05 deg
peri 141.65970677378 0.00011799 deg
M 244.4216750045933 0.0001105 deg
tp 2459544.743760651991
(2021-Nov-26.24376065)
0.0005212 TDB
period 1695.194612333265
4.64
1.5911e-05
4.356e-08
d
yr
n .2123649977299634 1.9932e-09 deg/d
Q 2.848745466287571 1.7825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      903  
   data-arc span      9780 days (26.78 yr)  
   first obs. used      1993-04-24  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:31:50  

Additional Information
 Earth MOID = 1.70176 au 
 Jupiter MOID = 2.17545 au 
 T_jup = 3.327 
[ 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-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 0.041   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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