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JPL Small-Body Database Browser
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15224 Penttila (1985 JG)
Classification: Main-belt Asteroid          SPK-ID: 2015224
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2422030170616777 4.0206e-08  
a 2.416630882402679 8.0175e-09 au
q 1.831315591560326 9.6932e-08 au
i 12.34961765359737 4.9205e-06 deg
node 70.11642336054642 1.6865e-05 deg
peri 196.2307923781261 1.8651e-05 deg
M 356.1338302146443 7.7914e-06 deg
tp 2458615.236431516006
2.9712e-05 TDB
period 1372.188920894556
n .2623545450034017 1.3056e-09 deg/d
Q 3.001946173245032 9.9593e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      18084 days (49.51 yr)  
   first obs. used      1970-04-27  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52724  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:54:59  

Additional Information
 Earth MOID = .81858 au 
 Jupiter MOID = 2.09487 au 
 T_jup = 3.445 
[ 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 13.9   n/a MPO337387  
diameter diameter 7.924 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4.377 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Klinglesmith III, D.A.; Hanowell, J.; Hendrickx, S.; Madden K.; Montgomery, S. (2015) Minor Planet Bull. 42, 251-252.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.085   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

15224 Penttil{ä}           Discovered 1985 May 15 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Antti Penttil{ä} (b. 1977) is a postdoctoral researcher at the University of Helsinki. He is a specialist on the scattering and absorption of light by cosmic dust in cometary comae as well as on the surfaces of asteroids and cometary nuclei.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

Alternate Designations
 1985 JG = 1970 HB = 2000 HR19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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