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 ]  
103208 (1999 XN254)
Classification: Main-belt Asteroid          SPK-ID: 2103208
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1960956113033858 5.2853e-08  
a 2.36936207371978 1.0766e-08 au
q 1.904740569474642 1.2505e-07 au
i 2.925805488886973 3.9026e-06 deg
node 286.9132913679814 0.0001261 deg
peri 299.2910210150145 0.00012687 deg
M 173.4144136327614 1.5615e-05 deg
tp 2458558.805574493519
(2019-Mar-16.30557449)
5.6092e-05 TDB
period 1332.126830423344
3.65
9.0794e-06
2.486e-08
d
yr
n .2702445381162344 1.8419e-09 deg/d
Q 2.833983577964918 1.2877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      7696 days (21.07 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57361  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:38  

Additional Information
 Earth MOID = .896085 au 
 Jupiter MOID = 2.16295 au 
 T_jup = 3.518 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPC19471  

103208 (1999 XN254)          Discovered 1999-Dec-12 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-Sep-02 05:54 < 00:01 Eunom 0.0331040218001156 0.0330948228258411 0.0331132311904633 7.49617559765347 7.49617554108514 2426221.746006566 0.508168641446451 1040.68187456515 61.360821139443 -64.0435963171593 72573.0749866369 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:45:40 2021-Apr-13 15:45

Alternate Designations
 1999 XN254 = 2001 OE109 = 2001 QV35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 12:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin