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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09181517141265615 6.0604e-08  
a 1.922534589644586 7.9221e-09 au
q 1.746016746749607 1.1643e-07 au
i 23.59380828019534 7.674e-06 deg
node 185.8732869868142 1.1221e-05 deg
peri 150.2330653704537 3.3745e-05 deg
M 351.2579776619577 3.4776e-05 deg
tp 2459024.143898229219
(2020-Jun-23.64389823)
9.4113e-05 TDB
period 973.6652496846483
2.67
6.0182e-06
1.648e-08
d
yr
n .3697369297267178 2.2853e-09 deg/d
Q 2.099052432539564 8.6495e-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 = .75653 au 
 Jupiter MOID = 3.17579 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 14.9   n/a MPO474110  
rotation period rot_per 22.07 h n/a LCDB (Rev. 2019-August); 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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