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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06266182021387359 3.4521e-08  
a 2.983253695361237 1.723e-08 au
q 2.796317588650138 1.0342e-07 au
i 10.0635708102715 4.4514e-06 deg
node 193.19823876893 2.1193e-05 deg
peri 69.79090704411735 4.077e-05 deg
M 276.3467621443557 3.511e-05 deg
tp 2459637.834724962477
(2022-Feb-27.33472496)
0.00018438 TDB
period 1882.061053729657
5.15
1.6305e-05
4.464e-08
d
yr
n .1912796608200315 1.6572e-09 deg/d
Q 3.170189802072337 1.831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1659  
   data-arc span      10334 days (28.29 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:10:57  

Additional Information
 Earth MOID = 1.80021 au 
 Jupiter MOID = 1.87618 au 
 T_jup = 3.232 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456926.5 (2014-Sep-26.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06477332516859292 3.4926e-08  
q 2.790743251322568 1.0529e-07 au
tp 2457744.209032580025
(2016-Dec-21.70903258)
0.00017319 TDB
node 193.3640063148586 2.1262e-05 deg
peri 67.67174516208684 3.9424e-05 deg
i 10.0438173932757 4.4456e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1659  
   data-arc span      10334 days (28.29 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:10:57  

Additional Information
 Jupiter MOID = 1.87618 au 
 T_jup = 3.232 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.219823414733337E-15 -3.634266461852255E-15 -9.848815013252078E-13 -5.213168435633179E-15 -1.893288279573707E-13 -4.401244658606084E-16
q -3.634266461852255E-15 1.108568381401485E-14 3.484704059541476E-12 1.668524609102084E-14 6.461160539699085E-13 1.191513755420272E-15
tp -9.848815013252078E-13 3.484704059541476E-12 2.999619780206047E-8 1.297281386646364E-12 5.758132805309739E-9 -4.010060710055672E-12
node -5.213168435633179E-15 1.668524609102084E-14 1.297281386646364E-12 4.52082471815089E-10 -4.449868915073119E-10 5.398004932922709E-12
peri -1.893288279573707E-13 6.461160539699085E-13 5.758132805309739E-9 -4.449868915073119E-10 1.554221017411162E-9 -6.185544827270629E-12
i -4.401244658606084E-16 1.191513755420272E-15 -4.010060710055672E-12 5.398004932922709E-12 -6.185544827270629E-12 1.976322588455117E-11

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 13.72   n/a E2020-QM5  
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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