Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582077135629195 1.3597e-08  
a 2.345051115694014 6.2952e-09 au
q 1.974045940491891 3.229e-08 au
i 5.122837777564042 8.0197e-07 deg
node 322.7733011422168 6.4946e-06 deg
peri 53.63380569226329 8.806e-06 deg
M 63.87386314213711 5.2921e-06 deg
tp 2459163.772566641619
(2020-Nov-10.27256664)
1.9402e-05 TDB
period 1311.67698159385
3.59
5.2817e-06
1.446e-08
d
yr
n .2744578162548491 1.1052e-09 deg/d
Q 2.716056290896138 7.2911e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2327  
   data-arc span      25007 days (68.47 yr)  
   first obs. used      1952-10-24  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:58:37  

Additional Information
 Earth MOID = .979199 au 
 Jupiter MOID = 2.77225 au 
 T_jup = 3.539 
[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-23 20:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin