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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196095610784381 5.2938e-08  
a 2.369362072270778 1.0767e-08 au
q 1.904740569539494 1.2525e-07 au
i 2.925805501846875 3.9046e-06 deg
node 286.9132932374662 0.00012643 deg
peri 299.2910188419565 0.0001272 deg
M 173.4144144404012 1.5633e-05 deg
tp 2458558.805572093616
(2019-Mar-16.30557209)
5.6163e-05 TDB
period 1332.126829201336
3.65
9.0804e-06
2.486e-08
d
yr
n .2702445383641395 1.8421e-09 deg/d
Q 2.833983575002063 1.2878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      7696 days (21.07 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:41  

Additional Information
 Earth MOID = .896085 au 
 Jupiter MOID = 2.16295 au 
 T_jup = 3.518 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457174.5 (2015-Jun-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956434316433485 5.3042e-08  
q 1.906187044748215 1.2549e-07 au
tp 2457226.094484632009
(2015-Jul-22.59448463)
5.3853e-05 TDB
node 286.9510203725949 0.00012649 deg
peri 299.2735255897695 0.00012727 deg
i 2.924587129939058 3.9034e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      7696 days (21.07 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:41  

Additional Information
 Jupiter MOID = 2.16295 au 
 T_jup = 3.518 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.813408963010807E-15 -6.640025358804392E-15 -1.684537344469697E-12 5.780770021832823E-14 -4.649350403317509E-13 -1.112851648654517E-15
q -6.640025358804392E-15 1.574694668888442E-14 4.08256826406201E-12 -1.386936565831228E-13 1.123444290378947E-12 2.684003395023466E-15
tp -1.684537344469697E-12 4.08256826406201E-12 2.900107609037379E-9 -5.541861152864838E-11 8.123600551873267E-10 1.799180746536364E-12
node 5.780770021832823E-14 -1.386936565831228E-13 -5.541861152864838E-11 1.600063895911025E-8 -1.599397852648714E-8 1.20218791765416E-10
peri -4.649350403317509E-13 1.123444290378947E-12 8.123600551873267E-10 -1.599397852648714E-8 1.619698726039447E-8 -1.195897174974336E-10
i -1.112851648654517E-15 2.684003395023466E-15 1.799180746536364E-12 1.20218791765416E-10 -1.195897174974336E-10 1.523655273348279E-11

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

[ show close-approach data ]
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-13 07:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin