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275974 (2001 XD)
Classification: Apollo [NEO]          SPK-ID: 2275974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7960829249822665 4.698e-08  
a 2.045217886830863 8.0716e-09 au
q .4170548492564995 9.7396e-08 au
i 11.30697854010144 8.5723e-06 deg
node 63.98693971654425 4.2492e-05 deg
peri 232.7133906379749 4.1924e-05 deg
M 272.7968724622369 6.2509e-06 deg
tp 2459655.283963803264
(2022-Mar-16.78396380)
1.9897e-05 TDB
period 1068.335845280679
2.92
6.3244e-06
1.732e-08
d
yr
n .3369726866231084 1.9948e-09 deg/d
Q 3.673380924405227 1.4497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      5457 days (14.94 yr)  
   first obs. used      2001-12-02  
   last obs. used      2016-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:54:49  

Additional Information
 Earth MOID = .0639094 au 
 Jupiter MOID = 1.7054 au 
 T_jup = 3.288 
[ 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 18.5   n/a MPO382382  
diameter diameter 0.626 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 26.1 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]
geometric albedo albedo 0.216   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

275974 (2001 XD)          Discovered 2001-Dec-02 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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