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JPL Small-Body Database Browser
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56062 (1998 XD91)
Classification: Main-belt Asteroid          SPK-ID: 2056062
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2362051877233076 3.7403e-08  
a 2.569411009302988 1.6172e-08 au
q 1.962502799512243 1.0246e-07 au
i 4.109493064133474 7.7738e-06 deg
node 168.4207735738601 5.3443e-05 deg
peri 270.9604984606017 5.9102e-05 deg
M 345.6726161478145 2.7102e-05 deg
tp 2458660.370542514584
(2019-Jun-25.87054251)
0.00011372 TDB
period 1504.349679440073
4.12
1.4202e-05
3.888e-08
d
yr
n .2393060635569742 2.2592e-09 deg/d
Q 3.176319219093734 1.9991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1103  
   data-arc span      8602 days (23.55 yr)  
   first obs. used      1996-05-18  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56768  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:40:18  

Additional Information
 Earth MOID = .983091 au 
 Jupiter MOID = 2.10428 au 
 T_jup = 3.387 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO452931  
diameter diameter 2.337 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.82 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.269   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56062 (1998 XD91)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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