Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
121121 Koyoharugotoge (1999 HJ3)
Classification: Inner Main-belt Asteroid          SPK-ID: 2121121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02910419191711094 7.2152e-08  
a 1.885187158554835 8.6911e-09 au
q 1.830320309692583 1.3441e-07 au
i 23.29371152161388 8.1827e-06 deg
node 71.563233112281 1.3219e-05 deg
peri 172.8205925934186 8.7223e-05 deg
M 22.49853453882633 8.772e-05 deg
tp 2458941.414370595173
(2020-Apr-01.91437060)
0.00023029 TDB
period 945.4316479604477
2.59
6.5379e-06
1.79e-08
d
yr
n .3807784526534706 2.6332e-09 deg/d
Q 1.940054007417088 8.944e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:52:21  

Additional Information
 Earth MOID = .816524 au 
 Jupiter MOID = 3.08971 au 
 T_jup = 3.865 
[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-02 18:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin