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 ]  
117401 (2005 AL8)
Classification: Main-belt Asteroid          SPK-ID: 2117401
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199051797034464 4.1599e-08  
a 2.756016854492049 1.9094e-08 au
q 2.425556158288453 1.1475e-07 au
i 9.895646720362619 5.1622e-06 deg
node 110.5924536481536 2.9948e-05 deg
peri 32.60575681894674 3.8161e-05 deg
M 122.2658990841073 2.3421e-05 deg
tp 2458432.923931154796
(2018-Nov-10.42393115)
0.00010744 TDB
period 1671.172308181494
4.58
1.7367e-05
4.755e-08
d
yr
n .2154176431942786 2.2386e-09 deg/d
Q 3.086477550695646 2.1383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      7081 days (19.39 yr)  
   first obs. used      1999-12-14  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51154  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:46  

Additional Information
 Earth MOID = 1.44525 au 
 Jupiter MOID = 1.96593 au 
 T_jup = 3.312 
[ 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 15.4   n/a MPO436563  
diameter diameter 4.808 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.21 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.064   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117401 (2005 AL8)          Discovered 2005-Jan-06 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-10 01:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin