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24242 (1999 XY100)
Classification: Mars-crossing Asteroid          SPK-ID: 2024242
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .264744050500098 4.1377e-08  
a 2.16991315603897 9.7738e-09 au
q 1.595441557875762 9.1984e-08 au
i 4.729516992495963 4.2089e-06 deg
node 303.8096493448426 5.0454e-05 deg
peri 14.48975074208298 5.148e-05 deg
M 317.2936348768169 1.6062e-05 deg
tp 2459339.000730581754
(2021-May-04.50073058)
5.278e-05 TDB
period 1167.513621578742
3.20
7.8881e-06
2.16e-08
d
yr
n .3083475801448883 2.0833e-09 deg/d
Q 2.744384754202178 1.2361e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1480  
   data-arc span      11187 days (30.63 yr)  
   first obs. used      1989-10-30  
   last obs. used      2020-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:38:11  

Additional Information
 Earth MOID = .580689 au 
 Jupiter MOID = 2.57027 au 
 T_jup = 3.639 
[ 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 14.62   n/a E2021B10  
diameter diameter 2.908 km 0.460 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 49.94 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.336   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

24242 (1999 XY100)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XY100 = 1989 UW6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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