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19210 Higayoshihiro (1992 YE4)
Classification: Main-belt Asteroid          SPK-ID: 2019210
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2326116402163858 3.6068e-08  
a 2.58077660691889 1.1957e-08 au
q 1.980457927351408 9.7123e-08 au
i 4.090895918849778 3.8391e-06 deg
node 150.2336176167546 4.7536e-05 deg
peri 240.4329909044635 4.8483e-05 deg
M 323.9419418750257 1.3662e-05 deg
tp 2459352.178449580010
(2021-May-17.67844958)
5.8295e-05 TDB
period 1514.342277100717
4.15
1.0524e-05
2.881e-08
d
yr
n .2377269692881043 1.6521e-09 deg/d
Q 3.181095286486372 1.4738e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1531  
   data-arc span      15059 days (41.23 yr)  
   first obs. used      1979-09-20  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:49:01  

Additional Information
 Earth MOID = .98844 au 
 Jupiter MOID = 2.27154 au 
 T_jup = 3.383 
[ 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 14.47   n/a E2021B10  
rotation period rot_per 6.23 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

19210 Higayoshihiro           Discovered 1992 Dec. 25 by T. Seki at Geisei.
Yoshihiro Higa (1965-2015) was an amateur astronomer and science communicator. He created the first astronomical science cafe in Sendai, Japan. He was also an amateur meteor researcher.
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 2018-05-29Last Updated: 2018-09-17

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Alternate Designations
 1992 YE4 = 1979 SR13 = 1979 SX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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