1108 Demeter
Discovery U–B = 0.308[1] | |
---|---|
11.91[1][4][7][8][9][11][12] 12.51[10] · 12.51±0.38[17] | |
1108 Demeter, provisional designation 1929 KA, is a dark
rotation period
of 9.846 hours.
Orbit and classification
Demeter is a non-
It orbits the Sun in the
semi-major axis of 2.43 AU). Its orbit has an eccentricity of 0.26 and an inclination of 25° with respect to the ecliptic.[1] The asteroid was first observed at the Italian Observatory of Turin, three days prior to its official discovery observation at Heidelberg. The body's observation arc begins at Yerkes Observatory in December 1930.[18]
Physical characteristics
In the
spectral type is ambiguous, closest to a carbonaceous C-type and somewhat similar to an X-type asteroid.[1][4]
Rotation period
In June 2016, a rotational
Stéphane Charbonnel from July 2001, which gave a period of 9.70 and 9.701 hours with an amplitude of 0.12 and 0.14 magnitude, respectively.[13][14]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0464 and a diameter of 25.61 kilometers based on an absolute magnitude of 11.91.[4]
Naming
This
H 104).[3]
Conflict with Ceres
Demeter is the Greek equivalent of the Roman goddess
1 Ceres was named, the Greeks called it "Demeter" effectively translating the name into Greek, rather than using the Latin Ceres or the original Italian Cerere. However, this created a problem when asteroid Demeter was named. The Greeks resolved this by using the classical form of the name, Δημήτηρ Dēmêtēr, for the new asteroid, distinguishing it from the Modern Greek form Δήμητρα Dêmētra that had been used for 1 Ceres. This conflict did not occur in Greek-influenced Slavic languages
such as Russian, which had adopted Cerera for 1 Ceres, and were thus free to use the modern Greek form Demetra for the asteroid Demeter.
References
- ^ a b c d e f g h "JPL Small-Body Database Browser: 1108 Demeter (1929 KA)" (2018-01-22 last obs.). Jet Propulsion Laboratory. Retrieved 8 March 2018.
- ^ "Demeter". Merriam-Webster.com Dictionary.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (1108) Demeter". Asteroid Lightcurve Database (LCDB). Retrieved 8 March 2018.
- ^ a b "Asteroid 1108 Demeter – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 October 2019.
- ^ S2CID 119293330.
- ^ S2CID 9341381. Retrieved 8 March 2018.
- ^ Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
- ^ S2CID 35447010.
- ^ S2CID 250780308.
- ^ )
- ^ S2CID 46350317. Retrieved 8 March 2018.
- ^ Bibcode:2002MPBu...29....2S. Retrieved 8 March 2018.
- ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1108) Demeter". Geneva Observatory. Retrieved 8 March 2018.
- ^ ISSN 1052-8091. Retrieved 8 March 2018.
- ^ ISSN 1052-8091. Retrieved 8 March 2018.
- S2CID 53493339. Retrieved 8 March 2018.
- ^ a b "1108 Demeter (1929 KA)". Minor Planet Center. Retrieved 8 March 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1108 Demeter at AstDyS-2, Asteroids—Dynamic Site
- 1108 Demeter at the JPL Small-Body Database