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17471 (1991 EO2)
Classification: Main-belt Asteroid          SPK-ID: 2017471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569071619678887 3.6835e-08  
a 2.418778614586074 6.7111e-09 au
q 2.039254926742752 8.997e-08 au
i 1.719791675173694 3.6829e-06 deg
node 316.3829014474604 0.0001164 deg
peri 219.3476507874427 0.00011683 deg
M 321.8588574552273 1.0432e-05 deg
tp 2459346.073996447382
(2021-May-11.57399645)
3.9943e-05 TDB
period 1374.01858529904
3.76
5.7185e-06
1.566e-08
d
yr
n .2620051896326061 1.0904e-09 deg/d
Q 2.798302302429397 7.7641e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1771  
   data-arc span      10962 days (30.01 yr)  
   first obs. used      1991-03-11  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:04:02  

Additional Information
 Earth MOID = 1.04369 au 
 Jupiter MOID = 2.16835 au 
 T_jup = 3.497 
[ 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 14.43   n/a E2021B10  
diameter diameter 3.831 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17471 (1991 EO2)          Discovered 1991-Mar-11 by Debehogne, H. at La Silla
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 EO2 = 1992 OY1 = 1997 WT42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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