Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
173340 (1999 XY23)
Classification: Main-belt Asteroid          SPK-ID: 2173340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07348588957406431 2.4569e-07  
a 2.513425573699723 9.9222e-09 au
q 2.328724259538196 6.1593e-07 au
i 8.000530638658836 7.5374e-06 deg
node 235.1730825951151 2.668e-05 deg
peri 181.0063469341277 0.00013509 deg
M 45.61317615289018 0.00011696 deg
tp 2458816.089653098489
(2019-Nov-28.58965310)
0.00047305 TDB
period 1455.450606246314
3.98
8.6185e-06
2.36e-08
d
yr
n .2473460785649466 1.4647e-09 deg/d
Q 2.69812688786125 1.0651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      10389 days (28.44 yr)  
   first obs. used      1991-11-07  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:27:07  

Additional Information
 Earth MOID = 1.34037 au 
 Jupiter MOID = 2.58114 au 
 T_jup = 3.443 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO352059  

173340 (1999 XY23)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 XY23 = 1995 WL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-08 12:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin