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193644 (2001 DL22)
Classification: Main-belt Asteroid          SPK-ID: 2193644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1723758747204802 3.706e-08  
a 2.720648956069772 1.7823e-08 au
q 2.251674712459883 1.0118e-07 au
i 11.02716449227077 4.7215e-06 deg
node 105.8766861541093 2.6683e-05 deg
peri 22.38464355837657 3.2812e-05 deg
M 139.897259812457 1.8422e-05 deg
tp 2458363.537452778611
(2018-Sep-02.03745278)
8.1219e-05 TDB
period 1639.106565111448
4.49
1.6107e-05
4.41e-08
d
yr
n .2196318455813899 2.1583e-09 deg/d
Q 3.18962319967966 2.0896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      6709 days (18.37 yr)  
   first obs. used      2001-02-16  
   last obs. used      2019-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:06:32  

Additional Information
 Earth MOID = 1.27117 au 
 Jupiter MOID = 1.90595 au 
 T_jup = 3.311 
[ 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 15.5   n/a MPO475631  
rotation period rot_per 5.415 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

193644 (2001 DL22)          Discovered 2001-Feb-16 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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