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10633 Akimasa (1998 DP1)
Classification: Main-belt Asteroid          SPK-ID: 2010633
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09182154662999287 5.0416e-08  
a 2.456380285887061 1.7515e-08 au
q 2.230831648925487 1.2602e-07 au
i 7.240996778671884 6.015e-06 deg
node 122.8480437386234 4.426e-05 deg
peri 343.5843024171767 5.9143e-05 deg
M 298.0719212577351 4.3103e-05 deg
tp 2457842.395025651671
0.00016997 JED
period 1406.18296261094
n .2560122043660432 2.7382e-09 deg/d
Q 2.681928922848634 1.9123e-08 au
  Orbit Determination Parameters
   # obs. used (total)      970  
   data-arc span      8501 days (23.27 yr)  
   first obs. used      1992-07-24  
   last obs. used      2015-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45872  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:06:32  

Additional Information
 Earth MOID = 1.24701 au 
 Jupiter MOID = 2.4139 au 
 T_jup = 3.476 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO347610  

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 | Physical Parameters | Discovery Circumstances ]
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