Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
55815 Melindakim (1994 YU2)
Classification: Main-belt Asteroid          SPK-ID: 2055815
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2343861659441289 5.9583e-08  
a 2.381833765998497 1.9912e-08 au
q 1.823564881669844 1.4319e-07 au
i 24.71316441955064 9.3824e-06 deg
node 163.0047438759296 1.5802e-05 deg
peri 262.2594386678875 2.7412e-05 deg
M 321.8217684748203 2.6505e-05 deg
tp 2457742.889808201461
(2016-Dec-20.38980820)
0.00010024 JED
period 1342.65860163581
3.68
1.6837e-05
4.61e-08
d
yr
n .2681247485856784 3.3623e-09 deg/d
Q 2.94010265032715 2.4579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      7504 days (20.54 yr)  
   first obs. used      1994-12-31  
   last obs. used      2015-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57125  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 23:36:32  

Additional Information
 Earth MOID = .988235 au 
 Jupiter MOID = 2.71338 au 
 T_jup = 3.380 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO302367  
rotation period rot_per 6.1167 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

55815 Melindakim           Discovered 1994 Dec. 31 by D. I. Steel at Siding Spring.
Melinda Kim Dowling (née Steel, b. 1958) is the discoverer's younger sister. A businesswoman who lives in Midsomer Norton, Somerset, she has been very supportive of the discoverer's career.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 1994 YU2 = 1999 CD11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-01 13:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin