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24187 (1999 XO18)
Classification: Main-belt Asteroid          SPK-ID: 2024187
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069234189096366 2.9681e-08  
a 2.445212871409993 8.5294e-09 au
q 1.939241064095988 7.4788e-08 au
i 3.379650786459567 3.3386e-06 deg
node 84.6031294526674 7.3476e-05 deg
peri 311.7293679848016 7.4326e-05 deg
M 178.468003514088 1.3094e-05 deg
tp 2458508.141064970010
(2019-Jan-24.64106497)
4.8701e-05 TDB
period 1396.604498862571
3.82
7.3074e-06
2.001e-08
d
yr
n .2577680369017807 1.3487e-09 deg/d
Q 2.951184678723998 1.0294e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1808  
   data-arc span      9806 days (26.85 yr)  
   first obs. used      1994-05-14  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46595  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:32:17  

Additional Information
 Earth MOID = .947351 au 
 Jupiter MOID = 2.47663 au 
 T_jup = 3.467 
[ 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 15.06   n/a E2021B10  
diameter diameter 2.714 km 0.816 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.30292 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.]
geometric albedo albedo 0.219   0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24187 (1999 XO18)          Discovered 1999-Dec-03 by LINEAR at Socorro
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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