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24280 Rohenderson (1999 XE172)
Classification: Main-belt Asteroid          SPK-ID: 2024280
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581258953193407 1.3607e-08  
a 2.344689979092573 6.3035e-09 au
q 1.973933776902274 3.2321e-08 au
i 5.12284745390962 8.0204e-07 deg
node 322.7733676312097 6.4955e-06 deg
peri 53.59075696795772 8.8092e-06 deg
M 10.11417908034157 5.3249e-06 deg
tp 2459163.657023760054
(2020-Nov-10.15702376)
1.9419e-05 TDB
period 1311.373996942573
3.59
5.2883e-06
1.448e-08
d
yr
n .2745212279939426 1.107e-09 deg/d
Q 2.715446181282872 7.3002e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2294  
   data-arc span      24974 days (68.38 yr)  
   first obs. used      1952-10-24  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:38:59  

Additional Information
 Earth MOID = .978427 au 
 Jupiter MOID = 2.77201 au 
 T_jup = 3.540 
[ 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 14.04   n/a E2021B10  
rotation period rot_per 26.5544 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.]

24280 Rohenderson           Discovered 1999 Dec. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
Robin Henderson mentored a finalist in the 2008 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Spring Valley High School, Columbia, South Carolina.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080221/MPCPages.arcLast Updated: 2008-03-05

Alternate Designations
 1999 XE172 = 1952 UA1 = 1991 OD1 = 1995 YS22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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