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22027 (1999 XS120)
Classification: Main-belt Asteroid          SPK-ID: 2022027
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08774576687748449 1.009e-08  
a 2.321339831014206 7.3683e-09 au
q 2.117652087358615 2.2378e-08 au
i 5.711187106211947 5.2353e-07 deg
node 283.9102300880447 7.9901e-06 deg
peri 332.4341284277292 1.3563e-05 deg
M 144.6067800169353 1.0507e-05 deg
tp 2458681.589251160169
(2019-Jul-17.08925116)
3.7407e-05 TDB
period 1291.833408920809
3.54
6.1508e-06
1.684e-08
d
yr
n .2786737032143659 1.3268e-09 deg/d
Q 2.525027574669799 8.0149e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2419  
   data-arc span      10835 days (29.66 yr)  
   first obs. used      1991-07-08  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:58:07  

Additional Information
 Earth MOID = 1.10259 au 
 Jupiter MOID = 2.52334 au 
 T_jup = 3.566 
[ 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 14.32   n/a E2021B10  
rotation period rot_per 86.0378 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

22027 (1999 XS120)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XS120 = 1991 NF4 = 1998 MM25 = 2000 AB10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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