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7757 Kameya (1990 KO)
Classification: Main-belt Asteroid          SPK-ID: 2007757
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 .2470172761117079 4.5986e-08  
a 2.293691423862876 7.1846e-09 au
q 1.727110016099484 1.0479e-07 au
i 23.09390340797921 4.4602e-06 deg
node 235.415541536704 1.158e-05 deg
peri 69.66020809575876 1.393e-05 deg
M 84.01504716215665 8.2194e-06 deg
tp 2458304.388354457670
(2018-Jul-04.88835446)
2.8643e-05 TDB
period 1268.822621613134
3.47
5.9616e-06
1.632e-08
d
yr
n .2837276021626328 1.3331e-09 deg/d
Q 2.860272831626269 8.9594e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1636  
   data-arc span      10750 days (29.43 yr)  
   first obs. used      1990-05-22  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44412  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:04:47  

Additional Information
 Earth MOID = .82975 au 
 Jupiter MOID = 2.54158 au 
 T_jup = 3.452 
[ 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 13.4   n/a MPO412235  
diameter diameter 6.014 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.98 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 4-7.]
geometric albedo albedo 0.234   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7757 Kameya           Discovered 1990 May 22 by E. F. Helin at Palomar.
Radio astronomer Osamu Kameya (b. 1956) is a researcher at the National Astronomical Observatory of Japan. He studies the formation mechanism of massive star-forming regions through radio observations. He has also contributed to the construction of VERA (VLBI Experiment for Radio Astrometry).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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