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 ]  
21229 Susil (1995 SM1)
Classification: Main-belt Asteroid          SPK-ID: 2021229
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08397471764427061 7.6099e-08  
a 2.635665803298632 2.1206e-08 au
q 2.41433651166197 2.1193e-07 au
i 1.140586103132508 4.4964e-06 deg
node 84.78597886601143 0.00036413 deg
peri 268.4761459355223 0.0003651 deg
M 341.7937214383129 2.7452e-05 deg
tp 2459279.541035662718
(2021-Mar-06.04103566)
0.0001194 TDB
period 1562.909890792183
4.28
1.8862e-05
5.164e-08
d
yr
n .230339574994646 2.7799e-09 deg/d
Q 2.856995094935294 2.2987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      9120 days (24.97 yr)  
   first obs. used      1995-09-22  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:58:13  

Additional Information
 Earth MOID = 1.40745 au 
 Jupiter MOID = 2.48991 au 
 T_jup = 3.392 
[ 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 15.88   n/a E2021B10  
diameter diameter 3.945 km 1.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.11 h n/a LCDB (Rev. 2020-October); 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 0.054   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21229 Sušil           Discovered 1995 Sept. 22 by L. Šarounová at Ondřejov.
František Sušil (1804-1868), a great collector of Moravian folk songs, published almost 2400 songs in his compilation Moravské národní písně ("Moravian Folk Songs"). By walking the length and breadth of Moravia, he was able to record both lyrics and music directly from the local people. The name was suggested by L. Vašta.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ 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 2021-Apr-13 06:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin