Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
18443 (1994 PW8)
Classification: Main-belt Asteroid          SPK-ID: 2018443
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04338919714163516 4.6083e-08  
a 2.975654894166398 2.1225e-08 au
q 2.84654361733794 1.4e-07 au
i 8.650008165984968 5.6004e-06 deg
node 331.9652222418188 3.0607e-05 deg
peri 113.6850129538155 6.8102e-05 deg
M 259.8168480388903 6.1179e-05 deg
tp 2459522.252405764935
(2021-Nov-03.75240577)
0.00031968 TDB
period 1874.874790806053
5.13
2.006e-05
5.492e-08
d
yr
n .1920128222777093 2.0544e-09 deg/d
Q 3.104766170994855 2.2146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      8700 days (23.82 yr)  
   first obs. used      1994-08-10  
   last obs. used      2018-06-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51885  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 17:49:02  

Additional Information
 Earth MOID = 1.8767 au 
 Jupiter MOID = 1.98841 au 
 T_jup = 3.242 
[ 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 14.0   n/a MPO435870  
diameter diameter 4.847 km 0.336 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.998 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.227   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18443 (1994 PW8)          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 PW8 = 2000 RC76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 20:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin