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52455 Masamika (1995 AD1)
Classification: Main-belt Asteroid          SPK-ID: 2052455
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026234076611366 8.2002e-08  
a 2.527989195799635 9.4876e-09 au
q 2.015759410416177 2.0628e-07 au
i 18.95910687844789 8.2483e-06 deg
node 281.2049196165382 1.3352e-05 deg
peri 177.9239645611094 1.8932e-05 deg
M 175.5947744523824 1.1959e-05 deg
tp 2458484.405506941761
(2018-Dec-31.90550694)
4.6993e-05 TDB
period 1468.118959148607
4.02
8.2649e-06
2.263e-08
d
yr
n .2452117369349767 1.3804e-09 deg/d
Q 3.040218981183093 1.141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      9359 days (25.62 yr)  
   first obs. used      1994-12-08  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4755  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:45:31  

Additional Information
 Earth MOID = 1.03254 au 
 Jupiter MOID = 2.14644 au 
 T_jup = 3.349 
[ 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 14.56   n/a MPCxxxxx  
diameter diameter 4.025 km 0.839 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.228   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

52455 Masamika           Discovered 1995 Jan. 6 by T. Seki at Geisei.
Masa-aki Takanashi (1959-2001) was an active member of the Gotemba Astronomical Circle and the Nippon Meteor Society. With his wife Mika he was devoted to the popularization of astronomy and meteor observations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

Alternate Designations
 1995 AD1 = 1998 XZ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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