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66189 (1998 XA97)
Classification: Main-belt Asteroid          SPK-ID: 2066189
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196951485918922 3.7098e-08  
a 2.313574719499276 1.1539e-08 au
q 2.036651049670365 8.395e-08 au
i 7.005442947788696 4.1665e-06 deg
node 110.7124984610488 4.0652e-05 deg
peri 157.4562662593016 4.8491e-05 deg
M 304.778940448133 2.7781e-05 deg
tp 2459397.663244672472
(2021-Jul-02.16324467)
9.9081e-05 TDB
period 1285.356866711732
3.52
9.6161e-06
2.633e-08
d
yr
n .2800778595604901 2.0953e-09 deg/d
Q 2.590498389328187 1.292e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      10609 days (29.05 yr)  
   first obs. used      1992-01-31  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:06  

Additional Information
 Earth MOID = 1.02062 au 
 Jupiter MOID = 2.49292 au 
 T_jup = 3.563 
[ 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 15.93   n/a MPCxxxxx  
diameter diameter 1.719 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.88 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.344   0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66189 (1998 XA97)          Discovered 1998-Dec-12 by Naranjo, O. A. at Merida
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XA97 = 2003 FM80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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