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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2032249964854513 9.9121e-08  
a 2.526628525998621 9.7323e-09 au
q 2.01315445268251 2.5034e-07 au
i 18.96294268291782 8.9187e-06 deg
node 281.2016590878389 1.4091e-05 deg
peri 177.8608029312158 2.1688e-05 deg
M 126.5975340386914 1.3175e-05 deg
tp 2458484.638323794675
(2019-Jan-01.13832379)
5.2757e-05 TDB
period 1466.933813870017
4.02
8.4757e-06
2.321e-08
d
yr
n .2454098450769635 1.4179e-09 deg/d
Q 3.040102599314732 1.171e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      8899 days (24.36 yr)  
   first obs. used      1994-12-08  
   last obs. used      2019-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4847  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:06:07  

Additional Information
 Earth MOID = 1.03012 au 
 Jupiter MOID = 2.14663 au 
 T_jup = 3.350 
[ 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 14.6   n/a MPO267880  
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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