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JPL Small-Body Database Browser
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26227 (1998 HJ7)
Classification: Inner Main-belt Asteroid          SPK-ID: 2026227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09195625175137816 6.0609e-08  
a 1.922316585738156 7.851e-09 au
q 1.745547557834169 1.1649e-07 au
i 23.59517223814536 7.6744e-06 deg
node 185.891966470946 1.122e-05 deg
peri 150.3585639207884 3.3688e-05 deg
M 203.2246655328686 3.4388e-05 deg
tp 2459024.446478008529
(2020-Jun-23.94647801)
9.3935e-05 TDB
period 973.4996426690331
2.67
5.9639e-06
1.633e-08
d
yr
n .3697998275715768 2.2655e-09 deg/d
Q 2.099085613642144 8.573e-09 au
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      25218 days (69.04 yr)  
   first obs. used      1950-04-22  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:24:06  

Additional Information
 Earth MOID = .755093 au 
 Jupiter MOID = 3.17754 au 
 T_jup = 3.816 
[ 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 14.8   n/a MPO302221  
rotation period rot_per 22.07 h n/a LCDB (Rev. 2019-January); 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:
[Warner, Brian D. (2014) Minor Planet Bull. 41, 235-241.]

26227 (1998 HJ7)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HJ7 = 1999 YP14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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