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24898 Alanholmes (1997 AR17)
Classification: Main-belt Asteroid          SPK-ID: 2024898
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220574325496229 2.7302e-08  
a 2.259642831503299 6.3816e-09 au
q 1.983836629010846 6.2473e-08 au
i 1.925411441157646 2.7805e-06 deg
node 261.8206233380529 0.00010162 deg
peri 321.110830813688 0.0001025 deg
M 278.9882031663791 1.4229e-05 deg
tp 2459479.692590450497
(2021-Sep-22.19259045)
4.9329e-05 TDB
period 1240.675265709775
3.40
5.2558e-06
1.439e-08
d
yr
n .2901645659825809 1.2292e-09 deg/d
Q 2.535449033995751 7.1606e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1543  
   data-arc span      8832 days (24.18 yr)  
   first obs. used      1997-01-14  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:38:40  

Additional Information
 Earth MOID = .97423 au 
 Jupiter MOID = 2.44251 au 
 T_jup = 3.610 
[ 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 15.36   n/a MPCxxxxx  
rotation period rot_per 6.86 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

24898 Alanholmes           Discovered 1997 Jan. 14 at Farra d´Isonzo.
Alan W. Holmes (b. 1950) is an amateur astronomer in the \gamma -ray bursts field at the Santa Barbara Astronomical Group and optical engineer. He co-founded a small CCD brand that in 1991 developed star tracking equipment, sparking the CCD revolution in the world of amateur astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 AR17 = 1997 EK46 = 1998 MW37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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