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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2358544908991903 5.4002e-08  
a 3.098776898970111 2.4274e-08 au
q 2.367916451053344 1.7386e-07 au
i 14.52800060333933 6.5696e-06 deg
node 319.3866958775517 2.5203e-05 deg
peri 94.91055287594249 2.9968e-05 deg
M 17.44641766712711 1.4114e-05 deg
tp 2458903.942134679712
(2020-Feb-24.44213468)
7.8118e-05 TDB
period 1992.433757951401
5.45
2.3411e-05
6.41e-08
d
yr
n .1806835477281554 2.1231e-09 deg/d
Q 3.829637346886877 2.9999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      7926 days (21.70 yr)  
   first obs. used      1999-02-10  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:03  

Additional Information
 Earth MOID = 1.43244 au 
 Jupiter MOID = 1.82766 au 
 T_jup = 3.131 
[ 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 14.9   n/a MPO502629  
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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