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 ]  
1138 Attica (1929 WF)
Classification: Main-belt Asteroid          SPK-ID: 2001138
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07534340457841622 4.2006e-08  
a 3.146930675620929 1.589e-08 au
q 2.909830204547393 1.3055e-07 au
i 13.97065789863383 4.816e-06 deg
node 283.485405382084 1.8568e-05 deg
peri 106.5497053194192 4.028e-05 deg
M 102.1033731041834 3.398e-05 deg
tp 2458422.181907028171
(2018-Oct-30.68190703)
0.00019261 TDB
period 2039.056175523434
5.58
1.5444e-05
4.228e-08
d
yr
n .1765522717428746 1.3372e-09 deg/d
Q 3.384031146694466 1.7088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2229  
   data-arc span      33030 days (90.43 yr)  
   first obs. used      1929-11-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:19:31  

Additional Information
 Earth MOID = 1.9559 au 
 Jupiter MOID = 1.99191 au 
 T_jup = 3.159 
[ 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 11.4   n/a MPO502164  
diameter diameter 23.681 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.105   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1138 Attica (1929 WF)          Discovered 1929-Nov-22 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1929 WF = 1954 GK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-03 13:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin