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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
6149 Pelcak (1979 SS)
Classification: Main-belt Asteroid          SPK-ID: 2006149
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1742322983289819 4.3232e-08  
a 2.388331980581166 7.4806e-09 au
q 1.9722074104319 1.0322e-07 au
i 6.363735423951586 4.877e-06 deg
node 334.9583455069803 3.3024e-05 deg
peri 17.88798946197985 3.4626e-05 deg
M 266.0507009798472 1.0656e-05 deg
tp 2458952.328900584380
(2020-Apr-12.82890058)
4.0569e-05 TDB
period 1348.156990327386
3.69
6.334e-06
1.734e-08
d
yr
n .2670312156394914 1.2546e-09 deg/d
Q 2.804456550730432 8.784e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1632  
   data-arc span      15568 days (42.62 yr)  
   first obs. used      1977-01-12  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:53:21  

Additional Information
 Earth MOID = .966693 au 
 Jupiter MOID = 2.62336 au 
 T_jup = 3.505 
[ 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 14.3   n/a MPO384810  
diameter diameter 3.959 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6149 Pelčák           Discovered 1979 Sept. 25 by A. Mrkos at Klet.
Oldřich Pelčák (b. 1943) has been a Czechoslovak astronaut-candidate, a member of a team of Czechoslovak astronauts with Vladimír Remek. The name was suggested by M. Tichy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1979 SS = 1977 AA3 = 1990 QD4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-22 14:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin