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JPL Small-Body Database Browser
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27675 Paulmaley (1981 CH)
Classification: Main-belt Asteroid          SPK-ID: 2027675
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1907730225250856 5.9861e-08  
a 2.351701180748526 8.9983e-09 au
q 1.903060038421317 1.438e-07 au
i 24.69666350915098 3.7477e-06 deg
node 316.2288565225232 8.8803e-06 deg
peri 186.263017152269 1.2923e-05 deg
M 207.7792739985653 9.7493e-06 deg
tp 2459157.484257931097
3.7163e-05 TDB
period 1317.26038971398
n .2732944851383314 1.5686e-09 deg/d
Q 2.800342323075735 1.0715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1746  
   data-arc span      14184 days (38.83 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38797  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:40:38  

Additional Information
 Earth MOID = .917947 au 
 Jupiter MOID = 2.25143 au 
 T_jup = 3.412 
[ 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 13.5   n/a MPO412383  
diameter diameter 5.089 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.9661 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Aznar Macias, A. (2017) Minor Planet Bull. 44, 276-279.]
[Pray, D.; Pravec, P.; Kucakova, H.; Hornoch, K; et al. (2017) CBET 4361.]
[Zeigler, K.; Banshaw, B.; Gass, J. (2017) Minor Planet Bull. 44, 259-260.]
geometric albedo albedo 0.238   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

27675 Paulmaley           Discovered 1981 Feb. 2 by L. Brozek at Klet.
Paul D. Maley (b. 1947) is an amateur astronomer and an expert in occultation methods to define the shapes and sizes of asteroids. He has recorded nearly 300 separate asteroidal-occultation events spanning more than four decades. He has shown a lifelong passion for promoting the detection of asteroidal satellites by occultation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-12-12Last Updated: 2019-12-13

Alternate Designations
 1981 CH = 1999 BO12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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