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15957 Gemoore (1998 BB27)
Classification: Main-belt Asteroid          SPK-ID: 2015957
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093327611808397 4.1145e-08  
a 2.932130922002769 1.562e-08 au
q 2.611552952156485 1.2216e-07 au
i 1.109474000525549 3.4764e-06 deg
node 310.7644505685054 0.00025556 deg
peri 28.83627242890892 0.00025647 deg
M 345.5106979076891 2.3109e-05 deg
tp 2459274.310548110448
(2021-Feb-28.81054811)
0.00011786 TDB
period 1833.890766475371
5.02
1.4654e-05
4.012e-08
d
yr
n .1963039492760513 1.5686e-09 deg/d
Q 3.252708891849053 1.7328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      14282 days (39.10 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:13:40  

Additional Information
 Earth MOID = 1.6009 au 
 Jupiter MOID = 2.10456 au 
 T_jup = 3.267 
[ 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 13.81   n/a E2021B10  
diameter diameter 5.345 km 0.367 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 17.02 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.205   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15957 Gemoore           Discovered 1998 Jan. 22 by Spacewatch at Kitt Peak.
George Edward Moore (1873-1958) was a philosopher at Cambridge University who helped establish twentieth-century analytic philosophy. In Principia Ethica, Moore concluded that goodness is a simple, undefinable, non-natural property. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1998 BB27 = 1981 UA6 = 1999 FT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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