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 ]  
90994 (1997 YH18)
Classification: Main-belt Asteroid          SPK-ID: 2090994
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804761930301708 6.2272e-08  
a 2.429483626893801 1.6788e-08 AU
q 1.991019670882876 1.5469e-07 AU
i 1.913020618105326 6.8107e-06 deg
node 37.89198665762441 0.0001748 deg
peri 12.90631832712964 0.00017568 deg
M 210.4053855635769 1.8876e-05 deg
tp 2457575.255121280378
(2016-Jul-05.75512128)
7.5353e-05 JED
period 1383.150352306784
3.79
1.4337e-05
3.925e-08
d
yr
n .2602753918976348 2.6978e-09 deg/d
Q 2.867947582904726 1.9818e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      622  
   data-arc span      6416 days (17.57 yr)  
   first obs. used      1997-12-03  
   last obs. used      2015-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51197  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 14:14:34  

Additional Information
 Earth MOID = 1.00131 AU 
 T_jup = 3.485 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO299528  

90994 (1997 YH18)          Discovered 1997-Dec-29 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Aug-03 02:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin