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 ]  
2553 Viljev (1979 FS2)
Classification: Main-belt Asteroid          SPK-ID: 2002553
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04741250850372684 2.3225e-08  
a 3.088606604535304 1.3454e-08 au
q 2.942168017633107 7.0363e-08 au
i 5.248930797479696 4.0565e-07 deg
node 119.9995028620342 2.6331e-06 deg
peri 250.2811277341017 1.2747e-05 deg
M 121.5019387133758 1.2615e-05 deg
tp 2458727.350700776911
(2019-Aug-31.85070078)
6.7715e-05 TDB
period 1982.632954430323
5.43
1.2955e-05
3.547e-08
d
yr
n .1815767256342413 1.1864e-09 deg/d
Q 3.235045191437501 1.4092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3357  
   data-arc span      29700 days (81.31 yr)  
   first obs. used      1940-02-10  
   last obs. used      2021-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43397  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 21:46:16  

Additional Information
 Earth MOID = 1.9453 au 
 Jupiter MOID = 2.02527 au 
 T_jup = 3.217 
[ 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 11.49   n/a E2021B10  
diameter diameter 14.021 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.271   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2553 Viljev (1979 FS2)          Discovered 1979-Mar-29 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 FS2 = 1940 CK = 1954 UA1 = 1956 AU = 1968 HT = 1978 EV1 = A899 PG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-04 17:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin