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100971 (1998 QE22)
Classification: Main-belt Asteroid          SPK-ID: 2100971
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2470267125317011 3.6758e-08  
a 2.560717142013654 1.0409e-08 au
q 1.928151604698448 9.7339e-08 au
i 2.641599225617885 4.7949e-06 deg
node 244.2383270177659 6.524e-05 deg
peri 47.0538154396902 6.5997e-05 deg
M 185.9349873219614 1.2042e-05 deg
tp 2459924.185423757514
(2022-Dec-10.68542376)
5.3324e-05 TDB
period 1496.720958131841
4.10
9.1259e-06
2.499e-08
d
yr
n .2405257961038645 1.4665e-09 deg/d
Q 3.19328267932886 1.298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      8238 days (22.55 yr)  
   first obs. used      1998-06-30  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .505  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:39  

Additional Information
 Earth MOID = .911168 au 
 Jupiter MOID = 2.00737 au 
 T_jup = 3.390 
[ 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 15.3   n/a MPO453463  
diameter diameter 2.197 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.366   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100971 (1998 QE22)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QE22 = 2002 LY31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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