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22018 (1999 XK105)
Classification: Main-belt Asteroid          SPK-ID: 2022018
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112810544966872 3.5873e-08  
a 3.045633466750751 1.6078e-08 au
q 2.706712162960327 1.1283e-07 au
i 9.746457194446233 3.7452e-06 deg
node 274.0096854085625 2.2778e-05 deg
peri 131.4769153012955 2.9538e-05 deg
M 6.302224765594233 1.697e-05 deg
tp 2459166.513513629380
(2020-Nov-13.01351363)
9.1572e-05 TDB
period 1941.399354751415
5.32
1.5373e-05
4.209e-08
d
yr
n .1854332541725275 1.4683e-09 deg/d
Q 3.384554770541176 1.7867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1801  
   data-arc span      14074 days (38.53 yr)  
   first obs. used      1982-08-21  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47531  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:57:43  

Additional Information
 Earth MOID = 1.72807 au 
 Jupiter MOID = 1.98363 au 
 T_jup = 3.207 
[ 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 13.38   n/a E2021B10  
rotation period rot_per 17.0575 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]

22018 (1999 XK105)          Discovered 1999-Dec-08 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XK105 = 1998 QE66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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