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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
(2015 XN261)
Classification: Aten [NEO]          SPK-ID: 3736504
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638422392716124 3.9471e-05  
a .9739555358824502 4.067e-06 au
q .8143804799324864 4.1838e-05 au
i 2.321376123752464 0.0004027 deg
node 278.5016390400458 0.00059729 deg
peri 274.8921699928415 0.0022003 deg
M 183.8204705532492 0.014072 deg
tp 2459568.314600822202
(2021-Dec-19.81460082)
0.0148 TDB
period 351.0808349314364
0.96
0.002199
6.021e-06
d
yr
n 1.025404875974804 6.4227e-06 deg/d
Q 1.133530591832414 4.7333e-06 au
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      12 days  
   first obs. used      2015-12-10  
   last obs. used      2015-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .33324  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 15:34:18  

Additional Information
 Earth MOID = .0053209 au 
 Jupiter MOID = 3.82208 au 
 T_jup = 6.195 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.2   n/a E2015Y84  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-20 00:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin