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18450 (1994 PG27)
Classification: Main-belt Asteroid          SPK-ID: 2018450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371975807171586 3.7335e-08  
a 3.05723722755577 1.823e-08 au
q 2.637791676256685 1.0953e-07 au
i 1.40581004235379 3.38e-06 deg
node 131.6086027424539 0.00018845 deg
peri 30.53487818023176 0.0001891 deg
M 148.3327840354965 1.5234e-05 deg
tp 2458395.998639185576
(2018-Oct-04.49863919)
8.2624e-05 TDB
period 1952.504915055634
5.35
1.7463e-05
4.781e-08
d
yr
n .1843785371417322 1.6491e-09 deg/d
Q 3.476682778854856 2.0731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1501  
   data-arc span      13910 days (38.08 yr)  
   first obs. used      1982-07-11  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:29:32  

Additional Information
 Earth MOID = 1.64585 au 
 Jupiter MOID = 1.50014 au 
 T_jup = 3.220 
[ 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 14.13   n/a E2021B10  
diameter diameter 8.011 km 0.539 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18450 (1994 PG27)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PG27 = 1992 EF17 = 1997 BY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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