983 Gunila
Perihelion 2.8707 AU | | |
| 3.1610 AU | ||
| Eccentricity | 0.0919 | |
| 5.62 yr (2,053 d) | ||
| 209.40° | ||
| 0° 10m 31.44s / day | ||
| Inclination | 14.868° | |
| 250.70° | ||
| 348.40° | ||
| Physical characteristics | ||
Mean diameter | ||
Synodic rotation period | 8.37±0.12 h[9] | |
| 9.4[1][3] | ||
983 Gunila (Lahrer Hinkender Bote.[2]
Orbit and classification
Gunila is a non-
semi-major axis of 3.16 AU). Its orbit has an eccentricity of 0.09 and an inclination of 15° with respect to the ecliptic.[3] The body's observation arc begins at the Vienna Observatory on 21 August 1922, or three weeks after its official discovery observation at Heidelberg.[1]
Naming
This
Theodore of Amasea (died 306), whose feast day is also 9 November.[12]
Reinmuth's calendar names
As with 22 other asteroids – starting with
Lutz Schmadel, the author of the Dictionary of Minor Planet Names learned about Reinmuth's source of inspiration from private communications with Dutch astronomer Ingrid van Houten-Groeneveld, who worked as a young astronomer at Heidelberg.[2]
Physical characteristics
In the
Small Solar System Objects Spectroscopic Survey (S3OS2), the asteroid is also an X-type, while in the S3OS2-survey's SMASS-like taxonomy it is an Xk-subtype that transitions to the K-type asteroids.[5][10]
Rotation period
In October 2013, a rotational
Diameter and albedo
According to the survey carried out by the Infrared Astronomical Satellite
NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, with diameters of 95.689±1.941 km or larger.[8][13] The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, and gives a diameter of 73.87 km with an albedo of 0.0477 based on an absolute magnitude of 9.58.[13]
Three
asteroid occultations between 2006 and 2014, gave an estimated diameter of 74, 92 and 93 kilometers, respectively.[5] These timed observations are taken when the asteroid passes in front of a distant star. However the measurements for Gunila were of poor quality in all three cases.[5]
Notes
- ^ Lightcurve plot of (983) Gunila, Palmer Divide Observatory, B. D. Warner (2001) rotation period undetermined with little to no brightness amplitude. Quality code of n.a. The asteroid might have very long period or it could have short period with a lightcurve that shows no amplitude. Summary figures at the LCDB
References
- ^ a b c d e "983 Gunila (A922 OD)". Minor Planet Center. Retrieved 10 February 2020.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f g h "JPL Small-Body Database Browser: 983 Gunila (A922 OD)" (2020-01-03 last obs.). Jet Propulsion Laboratory. Retrieved 10 February 2020.
- ^ a b "Asteroid 983 Gunila – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 10 February 2020.
- ^ a b c d e "Asteroid 983 Gunila – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 10 February 2020.
- ^ Bibcode:2004PDSS...12.....T. Retrieved 10 February 2020.
- ^ )
- ^ Bibcode:2016PDSS..247.....M. Retrieved 10 February 2020.
- ^ Bibcode:2014MPBu...41...77H.
- ^ . Retrieved 10 February 2020.
- ^ "Lahrer hinkender Bote – Kalender 1925". Badischen Landesbibliothek. 1925. p. 1. Retrieved 10 February 2020. Lahrer Bote collection
- ^ "Lahrer hinkender Bote – Kalender 1925". Badischen Landesbibliothek. 1925. p. 22. Retrieved 10 February 2020.
- ^ a b c d "LCDB Data for (983) Gunila". Asteroid Lightcurve Database (LCDB). Retrieved 10 February 2020.
External links
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 983 Gunila at AstDyS-2, Asteroids—Dynamic Site
- 983 Gunila at the JPL Small-Body Database
