Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08911558070845578 4.8805e-08  
a 2.531127876870118 1.0328e-08 au
q 2.305564946275476 1.2186e-07 au
i 11.444252357 3.8789e-06 deg
node 268.2333953525546 2.8962e-05 deg
peri 326.9824530500136 4.1687e-05 deg
M 70.18056929431971 3.0494e-05 deg
tp 2458313.762863769223
(2018-Jul-14.26286377)
0.0001245 TDB
period 1470.853971135207
4.03
9.0023e-06
2.465e-08
d
yr
n .2447557725408673 1.498e-09 deg/d
Q 2.756690807464759 1.1248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      21954 days (60.11 yr)  
   first obs. used      1959-10-29  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4252  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:16:53  

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 12.2   n/a MPO502257  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-18 00:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin