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JPL Small-Body Database Browser
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78391 Michaeljager (2002 PT163)
Classification: Main-belt Asteroid          SPK-ID: 2078391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2355573878698663 5.8071e-08  
a 3.09765379911111 2.5536e-08 au
q 2.367978561667329 1.8782e-07 au
i 14.52827563963332 7.505e-06 deg
node 319.3919112128641 2.6367e-05 deg
peri 94.92634804838384 3.1074e-05 deg
M 305.127317302229 1.5108e-05 deg
tp 2458904.029870657128
(2020-Feb-24.52987066)
8.3815e-05 TDB
period 1991.350669665813
5.45
2.4624e-05
6.742e-08
d
yr
n .1807818208434454 2.2355e-09 deg/d
Q 3.82732903655489 3.1551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7568 days (20.72 yr)  
   first obs. used      1999-02-10  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54328  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 09:16:46  

Additional Information
 Earth MOID = 1.43214 au 
 Jupiter MOID = 1.82926 au 
 T_jup = 3.132 
[ 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 14.8   n/a MPO412653  
diameter diameter 3.641 km 1.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78391 Michaeljäger           Discovered 2002 Aug. 8 by S. F. Hönig at Palomar.
Michael Jäger (b. 1958) is one of the most prolific and recognized comet astrophotographers. Within the last decades he imaged around 300 different comets and discovered comet P/1998 U3 as well as fragment D of comet 141P/Machholz. In 2002 he assisted the discoverer with confirmation of comet C/2002 O4 (Hönig).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

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Alternate Designations
 2002 PT163 = 1999 CP23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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