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150235 (1998 XO18)
Classification: Main-belt Asteroid          SPK-ID: 2150235
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739481749781188 4.327e-08  
a 2.558546687710392 1.2805e-08 au
q 2.113492160786858 1.144e-07 au
i 6.49558004669288 3.5299e-06 deg
node 70.98809575775866 5.8182e-05 deg
peri 332.8304743028309 6.3057e-05 deg
M 151.4920457122342 2.6363e-05 deg
tp 2458571.463602066410
(2019-Mar-28.96360207)
0.00010625 TDB
period 1494.818438759815
4.09
1.1221e-05
3.072e-08
d
yr
n .2408319235737259 1.8079e-09 deg/d
Q 3.003601214633925 1.5032e-08 au
  Orbit Determination Parameters
   # obs. used (total)      487  
   data-arc span      7763 days (21.25 yr)  
   first obs. used      1998-11-20  
   last obs. used      2020-02-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:17:41  

Additional Information
 Earth MOID = 1.12435 au 
 Jupiter MOID = 2.39245 au 
 T_jup = 3.406 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.30   n/a E2021B55  
rotation period rot_per 9.58658 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.]

150235 (1998 XO18)          Discovered 1998-Dec-08 by Spacewatch at Kitt Peak
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

Alternate Designations
 1998 XO18 = 2002 TJ227 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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