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18584 (1997 YB2)
Classification: Main-belt Asteroid          SPK-ID: 2018584
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076219468185719 2.9792e-08  
a 2.231319585201117 6.7608e-09 au
q 1.991180627467364 6.6655e-08 au
i 1.849974141385326 3.4299e-06 deg
node 281.0344171234435 0.00010799 deg
peri 350.5163746850487 0.0001097 deg
M 158.0912222963887 2.1696e-05 deg
tp 2458665.878586879577
(2019-Jul-01.37858688)
7.2359e-05 TDB
period 1217.421852571436
3.33
5.5331e-06
1.515e-08
d
yr
n .2957068654875947 1.344e-09 deg/d
Q 2.471458542934869 7.4884e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      10514 days (28.79 yr)  
   first obs. used      1992-04-05  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49972  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:39:00  

Additional Information
 Earth MOID = .973148 au 
 Jupiter MOID = 2.60039 au 
 T_jup = 3.633 
[ 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 15.0   n/a MPO439222  
rotation period rot_per 26.159 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

18584 (1997 YB2)          Discovered 1997-Dec-21 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 YB2 = 1992 GQ6 = 1996 PT6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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