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121121 Koyoharugotoge (1999 HJ3)
Classification: Inner Main-belt Asteroid          SPK-ID: 2121121
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02918504171146712 7.2202e-08  
a 1.884935012731929 8.7554e-09 au
q 1.829923105761943 1.3457e-07 au
i 23.29082133269156 8.1821e-06 deg
node 71.55295096649166 1.3222e-05 deg
peri 172.4341617281772 8.6771e-05 deg
M 99.03984731199284 8.7375e-05 deg
tp 2458940.453830747958
(2020-Mar-31.95383075)		 0.00022903 TDB
period 945.2419755437066
2.59		 6.5859e-06
1.803e-08		 d
yr
n .3808548597230108 2.6536e-09 deg/d
Q 1.939946919701915 9.0109e-09 au
   Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      9518 days (26.06 yr)  
   first obs. used      1994-06-03  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59416  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:09:41  

Additional Information
 Earth MOID = .81461 au 
 Jupiter MOID = 3.08862 au 
 T_jup = 3.866 
[ 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 17.01   n/a E2021B55  

121121 Koyoharugotoge           Discovered 1999 Apr. 19 by R. A. Tucker at at the Goodricke-Pigott Observatory, Tucson.
Koyoharu Gotoge (b. 1988) is a Japanese mangaka and the author of the manga Demon Slayer: Kimetsu no Yaiba, which inspired the realization of the popular anime series with the same name.
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 2020-08-07Last Updated: 2020-08-24

Alternate Designations
 1999 HJ3 = 1994 LU6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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