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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802632461713916 5.3978e-08  
a 2.429821036150801 1.6444e-08 au
q 1.991813608558724 1.3665e-07 au
i 1.91289607242367 5.881e-06 deg
node 37.88520482608248 0.00017283 deg
peri 12.87617925227964 0.00017363 deg
M 314.5217586044983 1.9198e-05 deg
tp 2457575.267639353947
(2016-Jul-05.76763935)
7.4737e-05 JED
period 1383.438502387735
3.79
1.4044e-05
3.845e-08
d
yr
n .2602211803261662 2.6416e-09 deg/d
Q 2.867828463742879 1.9408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      664  
   data-arc span      6535 days (17.89 yr)  
   first obs. used      1997-12-03  
   last obs. used      2015-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5032  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 18:50:38  

Additional Information
 Earth MOID = 1.00129 au 
 Jupiter MOID = 2.50687 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 2016-Feb-08 23:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin