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18448 (1994 PW17)
Classification: Main-belt Asteroid          SPK-ID: 2018448
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196810686928014 3.3236e-08  
a 3.077928545757598 1.6945e-08 au
q 2.472159314351702 1.0819e-07 au
i .8074008025171131 3.5327e-06 deg
node 136.77884475812 0.00031775 deg
peri 176.2613897576555 0.00031795 deg
M 323.5982404541613 1.2884e-05 deg
tp 2459399.937169963735
(2021-Jul-04.43716996)
7.1405e-05 TDB
period 1972.360184856837
5.40
1.6288e-05
4.459e-08
d
yr
n .1825224432960912 1.5073e-09 deg/d
Q 3.683697777163494 2.028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1380  
   data-arc span      10371 days (28.39 yr)  
   first obs. used      1992-02-25  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53994  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:29:27  

Additional Information
 Earth MOID = 1.45613 au 
 Jupiter MOID = 1.60832 au 
 T_jup = 3.199 
[ 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 14.01   n/a E2021B10  
diameter diameter 7.045 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18448 (1994 PW17)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PW17 = 1992 EP23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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