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7021 Tomiokamachi (1992 JN1)
Classification: Main-belt Asteroid          SPK-ID: 2007021
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714152044585879 1.393e-08  
a 2.591971461845446 1.133e-08 au
q 2.147668143762384 3.8008e-08 au
i 13.50382863793811 4.5873e-07 deg
node 90.43948956144595 1.2563e-06 deg
peri 218.7699444510573 7.4724e-06 deg
M 256.8289491176976 1.0694e-05 deg
tp 2459637.316569299116
(2022-Feb-26.81656930)
4.6793e-05 TDB
period 1524.206292393756
4.17
9.994e-06
2.736e-08
d
yr
n .236188501383643 1.5487e-09 deg/d
Q 3.036274779928508 1.3272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2632  
   data-arc span      25395 days (69.53 yr)  
   first obs. used      1951-09-04  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41987  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:20:00  

Additional Information
 Earth MOID = 1.14688 au 
 Jupiter MOID = 2.2248 au 
 T_jup = 3.360 
[ 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 12.62   n/a E2021B10  
rotation period rot_per 6.26741 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

7021 Tomiokamachi           Discovered 1992 May 6 by A. Sugie at Dynic.
Tomiokamachi is a town in Fukushima prefecture, Japan, famous for its nature beauty, especially the cherry blossoms in Yonomori Park. The town was heavily damaged during the 2011 earthquake.
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 2014-07-12Last Updated: 2014-08-13

Alternate Designations
 1992 JN1 = 1989 XH2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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