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 ]  
4691 Toyen (1983 TU)
Classification: Main-belt Asteroid          SPK-ID: 2004691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949391159623955 4.2494e-08  
a 2.263869145946722 6.6003e-09 au
q 1.822552495981325 9.6479e-08 au
i 5.875153446430973 4.3934e-06 deg
node 42.80539698325596 3.5675e-05 deg
peri 299.0984976894821 3.6749e-05 deg
M 182.9897770724927 9.3067e-06 deg
tp 2459212.246165711095
(2020-Dec-28.74616571)
3.2581e-05 TDB
period 1244.157631201824
3.41
5.441e-06
1.49e-08
d
yr
n .2893524027596482 1.2654e-09 deg/d
Q 2.705185795912119 7.887e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2281  
   data-arc span      16575 days (45.38 yr)  
   first obs. used      1973-12-21  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44483  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:38:04  

Additional Information
 Earth MOID = .822795 au 
 Jupiter MOID = 2.70747 au 
 T_jup = 3.586 
[ 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 13.5   n/a MPO435743  
diameter diameter 7.089 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.5025 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.221   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4691 Toyen           Discovered 1983 Oct. 7 by A. Mrkos at Klet.
Named in memory of Toyen (1902-1980), Czech painter and graphic artist, born Marie Čermínová. She is known for her imaginative abstraction, called artificialism, resulting in a surrealistic style. Name suggested by J. Ticha.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1983 TU = 1973 YV2 = 1987 YG5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 05:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin