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22568 (1998 HR34)
Classification: Main-belt Asteroid          SPK-ID: 2022568
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2243499426068861 3.1709e-08  
a 2.363497489437125 5.9973e-09 au
q 1.833246963330387 7.5569e-08 au
i 3.196982224776397 2.7554e-06 deg
node 106.5286930952293 7.0841e-05 deg
peri 221.5826995013961 7.1143e-05 deg
M 340.7359018430404 7.7093e-06 deg
tp 2459271.519453580487
(2021-Feb-26.01945358)
2.8505e-05 TDB
period 1327.184022873075
3.63
5.0516e-06
1.383e-08
d
yr
n .2712510049817173 1.0324e-09 deg/d
Q 2.893748015543864 7.3428e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1804  
   data-arc span      10689 days (29.26 yr)  
   first obs. used      1991-05-13  
   last obs. used      2020-08-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49967  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:41  

Additional Information
 Earth MOID = .821363 au 
 Jupiter MOID = 2.45787 au 
 T_jup = 3.513 
[ 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 14.93   n/a E2021B10  
rotation period rot_per 4.597 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

22568 (1998 HR34)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HR34 = 1999 XC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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