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 ]  
469421 (2001 XD255)
Classification: TransNeptunian Object          SPK-ID: 2469421
Ephemeris | Orbit Diagram | Orbital Elements | 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096151347178609 8.2841e-06  
a 39.17913820146855 0.00071326 au
q 34.88451168938489 0.00067936 au
i 18.14402290548244 4.2219e-05 deg
node 106.7429311805177 4.9066e-05 deg
peri 113.0189939008083 0.0071594 deg
M 285.7297676133929 0.0070713 deg
tp 2477680.119604346670
(2071-Jul-22.61960435)
1.2575 TDB
period 89573.74770197233
245.24
2.4461
0.006697
d
yr
n .004019034697507394 1.0975e-07 deg/d
Q 43.47376471355222 0.00079145 au
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      7005 days (19.18 yr)  
   first obs. used      2001-12-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .59066  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 16:19:02  

Additional Information
 Earth MOID = 33.9187 au 
 Jupiter MOID = 29.6845 au 
 T_jup = 5.317 
[ 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 5.80   n/a E2021B25  

469421 (2001 XD255)          Discovered 2001-Dec-09 by Sheppard, S. S., Jewitt, D. C., Kleyna, J. at Mauna Kea
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 05:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin