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26925 (1997 AK2)
Classification: Main-belt Asteroid          SPK-ID: 2026925
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .211703597822481 3.2385e-08  
a 2.996280419989492 1.4637e-08 au
q 2.361957074992662 9.8074e-08 au
i 1.360007311114306 4.5899e-06 deg
node 52.85724809069012 0.0001579 deg
peri 55.78921336210683 0.0001583 deg
M 198.5225651992998 1.2046e-05 deg
tp 2459850.230979767445
(2022-Sep-27.73097977)
6.5759e-05 TDB
period 1894.40185926804
5.19
1.3882e-05
3.801e-08
d
yr
n .1900335972743909 1.3925e-09 deg/d
Q 3.630603764986322 1.7736e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      10028 days (27.46 yr)  
   first obs. used      1992-03-06  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54614  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:43:27  

Additional Information
 Earth MOID = 1.37904 au 
 Jupiter MOID = 1.50884 au 
 T_jup = 3.219 
[ 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 14.2   n/a MPO435951  
diameter diameter 7.905 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.96 h n/a LCDB (Rev. 2019-August); 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.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]
geometric albedo albedo 0.071   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26925 (1997 AK2)          Discovered 1997-Jan-03 by Kobayashi, T. at Oizumi
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AK2 = 1995 XL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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