Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
1566 Icarus (1949 MA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2001566
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8269607943104155 6.8716e-08  
a 1.077926381266863 3.8646e-10 AU
q .1865235248062662 7.4074e-08 AU
i 22.8278631002327 1.6339e-05 deg
node 88.02444907753281 6.002e-06 deg
peri 31.35823187057106 9.8459e-06 deg
M 231.0896393883242 1.1185e-05 deg
tp 2457146.875166107403
(2015-May-04.37516611)
1.2776e-05 JED
period 408.7728833324858
1.12
2.1983e-07
6.019e-10
d
yr
n .8806846409799273 4.7362e-10 deg/d
Q 1.969329237727459 7.0605e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      863  
   # delay obs. used      0  
   # Doppler obs. used      11  
   data-arc span      23738 days (64.99 yr)  
   first obs. used      1949-06-27  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5526  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:59:46  

Additional Information
 Earth MOID = .0348285 AU 
 T_jup = 5.299 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9 mag n/a PDS3 (MPC 28106)  
diameter diameter 1.0 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
rotation period rot_per 2.273 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Miner, E.; Young, J. (1969) Icarus 10, 436-440.]
[Gehrels, T.; Roemer, E.; Taylor, R.C.; Zellner, B.H. (1970) Astron. J. 75, 186-195.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
geometric albedo albedo 0.51   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
B-V BV .774 mag .035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=13; phase (min.=38.56, mean=70.86, max.=102.48) deg.
U-B UB .520 mag .067 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=38.56, mean=68.16, max.=100.85) deg.

1566 Icarus (1949 MA)          Discovered 1949-Jun-27 by Baade, W. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-20 13:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin