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8911 Kawaguchijun (1995 YA)
Classification: Main-belt Asteroid          SPK-ID: 2008911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05986043376919507 2.5313e-08  
a 3.006233549710432 1.3162e-08 au
q 2.826279105413259 7.4742e-08 au
i 7.491422392657367 8.2261e-07 deg
node 73.75641987255979 1.5111e-05 deg
peri 165.1998496237768 2.8042e-05 deg
M 111.2615961882502 1.7272e-05 deg
tp 2458612.096444806933
(2019-May-08.59644481)
9.1166e-05 TDB
period 1903.849011037951
5.21
1.2503e-05
3.423e-08
d
yr
n .1890906253136814 1.2418e-09 deg/d
Q 3.186187994007605 1.3949e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2080  
   data-arc span      10552 days (28.89 yr)  
   first obs. used      1992-02-29  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:58:51  

Additional Information
 Earth MOID = 1.81284 au 
 Jupiter MOID = 1.8158 au 
 T_jup = 3.235 
[ 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 13.06   n/a MPCxxxxx  
diameter diameter 15.013 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.120 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.054   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8911 Kawaguchijun           Discovered 1995 Dec. 17 by T. Kobayashi at Oizumi.
Kawaguchi Jun'ichiro (b. 1955) is project manager of the MUSES-C mission, designed to deliver the world's first sample-and-return spacecraft.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1995 YA = 1992 DL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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