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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076219482214261 2.9711e-08  
a 2.231319584535554 6.6568e-09 au
q 1.991180623743214 6.6401e-08 au
i 1.849974295695529 3.4185e-06 deg
node 281.0344320313839 0.00010412 deg
peri 350.5163626684095 0.00010583 deg
M 158.0912202166008 2.1441e-05 deg
tp 2458665.878594152055
(2019-Jul-01.37859415)
7.1467e-05 TDB
period 1217.421852026733
3.33
5.448e-06
1.492e-08
d
yr
n .2957068656199008 1.3233e-09 deg/d
Q 2.471458545327894 7.3733e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1759  
   data-arc span      10579 days (28.96 yr)  
   first obs. used      1992-04-05  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:45:13  

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 14.97   n/a MPCxxxxx  
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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