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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06257059499789989 3.0671e-08  
a 2.982547187340445 1.4324e-08 au
q 2.79592743521924 9.6029e-08 au
i 10.06483751014153 4.4373e-06 deg
node 193.1977766773277 1.7047e-05 deg
peri 69.98506750553732 3.8763e-05 deg
M 313.6493236463781 3.4542e-05 deg
tp 2459638.732821072683
(2022-Feb-28.23282107)
0.00018075 TDB
period 1881.392515631577
5.15
1.3553e-05
3.711e-08
d
yr
n .1913476305496778 1.3784e-09 deg/d
Q 3.169166939461649 1.522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2003  
   data-arc span      10478 days (28.69 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:34:48  

Additional Information
 Earth MOID = 1.80156 au 
 Jupiter MOID = 1.87644 au 
 T_jup = 3.233 
[ 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 13.73   n/a MPCxxxxx  
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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