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14538 (1997 RR8)
Classification: Main-belt Asteroid          SPK-ID: 2014538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06269989563614706 3.4709e-08  
a 2.983775622382605 1.7295e-08 au
q 2.796693202257535 1.0387e-07 au
i 10.06234084883528 4.4538e-06 deg
node 193.2046445966225 2.1286e-05 deg
peri 69.60757645126681 4.0786e-05 deg
M 238.2839408059455 3.5012e-05 deg
tp 2459636.992148832547
(2022-Feb-26.49214883)
0.00018428 TDB
period 1882.55498162653
5.15
1.6368e-05
4.481e-08
d
yr
n .1912294745776612 1.6626e-09 deg/d
Q 3.170858042507674 1.8379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1639  
   data-arc span      10267 days (28.11 yr)  
   first obs. used      1992-10-03  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:56:55  

Additional Information
 Earth MOID = 1.80215 au 
 Jupiter MOID = 1.87624 au 
 T_jup = 3.232 
[ 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 13.7   n/a MPO365425  
diameter diameter 6.092 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 21.3706 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 0.189   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14538 (1997 RR8)          Discovered 1997-Sep-12 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 RR8 = 1998 XQ84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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