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15217 (1981 ET19)
Classification: Main-belt Asteroid          SPK-ID: 2015217
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1393214488110084 4.7414e-08  
a 2.410437861503525 1.1306e-08 au
q 2.074612166369945 1.1253e-07 au
i 1.914833771193704 3.7842e-06 deg
node 135.6159377102419 0.00016235 deg
peri 115.0546406574997 0.00016303 deg
M 217.2429723772131 1.6974e-05 deg
tp 2459938.547484620745
(2022-Dec-25.04748462)
6.6104e-05 TDB
period 1366.917606179694
3.74
9.6169e-06
2.633e-08
d
yr
n .2633662763377084 1.8529e-09 deg/d
Q 2.746263556637105 1.2881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      16066 days (43.99 yr)  
   first obs. used      1977-02-12  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55316  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:25:26  

Additional Information
 Earth MOID = 1.06145 au 
 Jupiter MOID = 2.2807 au 
 T_jup = 3.506 
[ 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 16.19   n/a MPCxxxxx  
rotation period rot_per 14.023 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.]

15217 (1981 ET19)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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