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7304 Namiki (1994 AE2)
Classification: Mars-crossing Asteroid          SPK-ID: 2007304
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4235089455054996 3.4971e-08  
a 2.62111795435318 1.1756e-08 au
q 1.511051053459533 8.9965e-08 au
i 9.604830410470433 4.3784e-06 deg
node 109.4079927875209 2.587e-05 deg
peri 114.8649953319048 2.6407e-05 deg
M 28.61566809196943 8.8976e-06 deg
tp 2458877.294622444215
3.762e-05 TDB
period 1549.987782131497
n .2322598953037803 1.5625e-09 deg/d
Q 3.731184855246828 1.6734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      13816 days (37.83 yr)  
   first obs. used      1982-08-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:39:29  

Additional Information
 Earth MOID = .533706 au 
 Jupiter MOID = 1.38232 au 
 T_jup = 3.253 
[ 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 13.8   n/a MPO337316  
rotation period rot_per 8.8712 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site,]
[Brinsfield, J.W. (2007) Minor Planet Bull. 34, 108-110.]
[Montigiani, N.; Mannucci, M.; Benedetti, W.; Riccetti, S. (2007) Minor Planet Bull. 34, 108.]
[Wagner, R. (2007) Minor Planet Bull. 34, 112.]
[Vander Haagen, G.A. (2008) Minor Planet Bull. 35, 5-6.]
[Sheridan, E. (2011) Posting on CALL site.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
SMASSII spectral type spec_B Ld   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7304 Namiki           Discovered 1994 Jan. 9 by T. Kobayashi at Oizumi.
Namiki Mitsuo (b. 1957) is a Japanese amateur astronomer on the staff of the public-information office of the National Astronomical Observatory. He acts as a bridge between Japanese professionals and amateurs and helps create friendly relationships.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
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