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26084 (1981 EK17)
Classification: Main-belt Asteroid          SPK-ID: 2026084
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216213387641826 2.9936e-08  
a 2.464505884142039 9.5658e-09 au
q 2.164769379120479 7.7179e-08 au
i 5.68819663376687 5.0072e-06 deg
node 206.1275070960897 2.9986e-05 deg
peri 76.15659375406044 3.9119e-05 deg
M 318.637284355628 2.273e-05 deg
tp 2459162.867745155890
(2020-Nov-09.36774516)
8.9064e-05 TDB
period 1413.166117009383
3.87
8.2277e-06
2.253e-08
d
yr
n .2547471211394815 1.4832e-09 deg/d
Q 2.764242389163599 1.0729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1610  
   data-arc span      14431 days (39.51 yr)  
   first obs. used      1981-02-14  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50783  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:30:58  

Additional Information
 Earth MOID = 1.15711 au 
 Jupiter MOID = 2.36057 au 
 T_jup = 3.471 
[ 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 14.82   n/a E2020-QM5  
rotation period rot_per 121.957 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

26084 (1981 EK17)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EK17 = 1998 UA8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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