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66947 (1999 XZ1)
Classification: Main-belt Asteroid          SPK-ID: 2066947
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682457628326543 3.954e-08  
a 2.769489938275635 1.3161e-08 au
q 2.303534990953091 1.1013e-07 au
i 9.086186362535967 4.5424e-06 deg
node 199.1529877104552 2.0955e-05 deg
peri 183.9222398855933 2.3258e-05 deg
M 233.8860730755438 1.1164e-05 deg
tp 2459790.237388816923
(2022-Jul-29.73738882)
5.3977e-05 TDB
period 1683.441830348093
4.61
1.2e-05
3.285e-08
d
yr
n .2138476028753314 1.5243e-09 deg/d
Q 3.235444885598181 1.5375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      7558 days (20.69 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:26:07  

Additional Information
 Earth MOID = 1.30559 au 
 Jupiter MOID = 2.22103 au 
 T_jup = 3.299 
[ 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 14.1   n/a MPO385243  
diameter diameter 4.645 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 22.0602 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.247   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66947 (1999 XZ1)          Discovered 1999-Dec-03 by Juels, C. W. at Fountain Hills
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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