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JPL Small-Body Database Browser
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10633 Akimasa (1998 DP1)
Classification: Main-belt Asteroid          SPK-ID: 2010633
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0927622191905265 3.4968e-08  
a 2.456003725174185 1.0282e-08 au
q 2.228179369286828 8.847e-08 au
i 7.24525036950158 3.9996e-06 deg
node 122.7713442798203 2.6661e-05 deg
peri 344.1733995500273 3.3626e-05 deg
M 193.486241993659 2.2314e-05 deg
tp 2459250.763803985092
8.9002e-05 TDB
period 1405.859625279242
n .2560710852824258 1.608e-09 deg/d
Q 2.683828081061542 1.1235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1589  
   data-arc span      9987 days (27.34 yr)  
   first obs. used      1992-07-24  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:25:38  

Additional Information
 Earth MOID = 1.24605 au 
 Jupiter MOID = 2.40662 au 
 T_jup = 3.476 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO435800  
diameter diameter 3.408 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.419   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

10633 Akimasa           Discovered 1998 Feb. 20 by P. Pravec at Ondřejov.
Named in honor of Akimasa Nakamura (b. 1961), a prolific Japanese observer of minor planets and comets. In the course of his observing program at the Kuma Kogen Astronomical Observatory he has obtained thousands of precise positions of minor bodies. His estimates of the magnitudes of minor planets are of particularly high quality and serve as the standard in the analysis of "astrometric" magnitude estimates. He is also Japanese coordinator for the International Comet Quarterly. This name marks the occasion of Nakamura's becoming a father in early 1999.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1998 DP1 = 1992 OH3 = 1995 HF5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-07 12:11 UT
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