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100972 (1998 QP22)
Classification: Main-belt Asteroid          SPK-ID: 2100972
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861954070932777 4.8947e-08  
a 2.405226979978521 1.0184e-08 au
q 1.957384763289685 1.1654e-07 au
i 3.694069102609895 3.9637e-06 deg
node 69.67565076703609 7.8967e-05 deg
peri 298.8427274702459 7.9658e-05 deg
M 326.5076209251743 1.1057e-05 deg
tp 2459327.258188565127
(2021-Apr-22.75818857)
4.2231e-05 TDB
period 1362.487501455081
3.73
8.6532e-06
2.369e-08
d
yr
n .2642226072646793 1.6781e-09 deg/d
Q 2.853069196667356 1.208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      766  
   data-arc span      7957 days (21.79 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:14:17  

Additional Information
 Earth MOID = .958432 au 
 Jupiter MOID = 2.61329 au 
 T_jup = 3.497 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.78   n/a E2021B55  
rotation period rot_per 2.978 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.]

100972 (1998 QP22)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QP22 = 2002 PH45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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