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JPL Small-Body Database Browser
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11549 (1992 YY)
Classification: Main-belt Asteroid          SPK-ID: 2011549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08911557997006986 4.8828e-08  
a 2.531127877092602 1.0339e-08 au
q 2.305564948347083 1.2194e-07 au
i 11.44425200102356 3.8928e-06 deg
node 268.2333948770099 2.8965e-05 deg
peri 326.9824531943358 4.1696e-05 deg
M 70.18056947998706 3.0498e-05 deg
tp 2458313.762862972835
(2018-Jul-14.26286297)
0.00012452 TDB
period 1470.853971329137
4.03
9.012e-06
2.467e-08
d
yr
n .2447557725085965 1.4996e-09 deg/d
Q 2.756690805838121 1.126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2052  
   data-arc span      21944 days (60.08 yr)  
   first obs. used      1959-10-29  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42406  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:37:25  

Additional Information
 Earth MOID = 1.30046 au 
 Jupiter MOID = 2.30529 au 
 T_jup = 3.417 
[ 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 12.1   n/a MPO347617  
diameter diameter 10.539 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.671 h n/a LCDB (Rev. 2019-January); 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:
[Pligge, Z.; Monnier, A.; Pharo, J.; Stolze, K.; Yim, A.; Ditteon, R. (2011) Minor Planet Bull. 38, 5-7.]
geometric albedo albedo 0.225   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

11549 (1992 YY)          Discovered 1992-Dec-25 by Natori, A., Urata, T. at Yakiimo
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 YY = 1959 UM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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