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 ]  
55740 (1989 YL2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2055740
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1662886370155706 5.5393e-08  
a 3.443421385363913 3.8157e-08 au
q 2.87081953652148 1.9042e-07 au
i 6.136454240854579 7.5015e-06 deg
node 127.7784649368438 6.4802e-05 deg
peri 316.1530177431122 7.098e-05 deg
M 85.33442532330761 2.6236e-05 deg
tp 2457047.270343755054
(2015-Jan-24.77034375)
0.00016892 JED
period 2333.907745831887
6.39
3.8793e-05
1.062e-07
d
yr
n .1542477420724628 2.5638e-09 deg/d
Q 4.016023234206346 4.4502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      804  
   data-arc span      9596 days (26.27 yr)  
   first obs. used      1989-12-30  
   last obs. used      2016-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57715  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 14:43:34  

Additional Information
 Earth MOID = 1.8894 au 
 Jupiter MOID = 1.2426 au 
 T_jup = 3.106 
[ 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 13.8 mag n/a MPO337701  

55740 (1989 YL2)          Discovered 1989-Dec-30 by McNaught, R. H. at Siding Spring
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 YL2 = 1990 BY2 = 2001 UQ135 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-30 03:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin