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7428 Abekuniomi (1992 YM)
Classification: Main-belt Asteroid          SPK-ID: 2007428
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164490482420783 3.3384e-08  
a 2.574460139183655 1.1205e-08 au
q 2.274666706238549 8.7214e-08 au
i 14.7793250417748 3.8895e-06 deg
node 107.8021530926249 1.4448e-05 deg
peri 351.8749839770408 2.3197e-05 deg
M 321.8196109167018 1.9908e-05 deg
tp 2459556.516782566211
(2021-Dec-08.01678257)
8.3863e-05 TDB
period 1508.786136206124
4.13
9.8503e-06
2.697e-08
d
yr
n .2386024045165394 1.5577e-09 deg/d
Q 2.87425357212876 1.251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1884  
   data-arc span      23802 days (65.17 yr)  
   first obs. used      1955-12-12  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45986  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:27:39  

Additional Information
 Earth MOID = 1.29255 au 
 Jupiter MOID = 2.27515 au 
 T_jup = 3.372 
[ 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 13.57   n/a E2021B10  
diameter diameter 5.181 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 86.553 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.345   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7428 Abekuniomi           Discovered 1992 Dec. 24 by T. Urata at Oohira.
Abe Kuniomi (b. 1941) is an expert photographer of the Moon's surface and planets, who has taught his observing technique to amateurs. He invented the binocular measurement system, Wink comparator, which was used to discover minor planets at Oohira.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-04-15Last Updated: 2014-04-17

Alternate Designations
 1992 YM = 1955 XL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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