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 ]  
168381 (1997 LY4)
Classification: Mars-crossing Asteroid          SPK-ID: 2168381
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2715695510799274 4.8749e-08  
a 1.80345097516024 2.2142e-09 au
q 1.313688603441316 8.7352e-08 au
i 8.357090446285117 4.1828e-06 deg
node 252.7301550839203 3.0614e-05 deg
peri 51.38407180722458 3.2774e-05 deg
M 305.1455411244303 8.8361e-06 deg
tp 2457735.292079309143
(2016-Dec-12.79207931)
2.1843e-05 JED
period 884.6163018646215
2.42
1.6292e-06
4.461e-09
d
yr
n .4069560997702404 7.4947e-10 deg/d
Q 2.293213346879164 2.8155e-09 au
  Orbit Determination Parameters
   # obs. used (total)      701  
   data-arc span      23603 days (64.62 yr)  
   first obs. used      1951-07-31  
   last obs. used      2016-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52215  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 22:34:54  

Additional Information
 Earth MOID = .321455 au 
 Jupiter MOID = 2.95203 au 
 T_jup = 4.006 
[ 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 16.7 mag n/a MPO367024  
rotation period rot_per 46.07 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Pravec, P.; Sarounova, L.; Wolf, M.; Ferrin Vasquez, I.R.; Zhu, J. (2000) Planet. Space Sci. 48, 59-65.]

168381 (1997 LY4)          Discovered 1997-Jun-10 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20071124/Numbers.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 1997 LY4 = 2000 YQ134 = 2002 OL 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-01 11:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin