220 Stephania
None
![]()
Lightcurve
-based 3D-model of
Stephania
|
|
Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Vienna Obs. |
Discovery date | 19 May 1881 |
Designations | |
(220) Stephania | |
Pronunciation | / s t ɪ ˈ f eɪ n i ə / [2] |
Named after
|
Princess Stéphanie
[3]
(Belgian royalty) |
A881 KA
·
1925 VE
1931 FP · 1932 UA 1943 WB · 1946 MA 1950 TT 4 · 1961 WB |
|
main-belt
·
(
inner
)
[4]
background [5] |
|
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 86.28 yr (31,514 days) |
Aphelion | 2.9543 AU |
Perihelion | 1.7443 AU |
2.3493 AU | |
Eccentricity | 0.2575 |
3.60 yr (1,315 days) | |
239.16 ° | |
0° 16 m 25.32 s / day | |
Inclination | 7.5895° |
257.92° | |
78.480° | |
Physical characteristics | |
Dimensions |
31.04 km
(derived)
[4]
31.12 ± 1.5 km [6] 31.738 ± 0.219 km [7] 31.96 ± 9.77 km [8] 32.29 ± 0.33 km [9] 33 ± 2 km [10] 35.097 ± 0.260 km [11] 38.46 ± 5.77 km [12] |
18.19
h
[lower-alpha 1]
18.198 h [13] 18.2 ± 0.2 h [10] 18.21 h [lower-alpha 2] |
|
0.03
±
0.01
[12]
0.05 ± 0.03 [8] 0.0571 ± 0.0068 [11] 0.0607 (derived) [4] 0.069 ± 0.002 [9] 0.069 ± 0.016 [7] 0.0726 ± 0.007 [6] 0.075 ± 0.015 [10] |
|
Tholen
=
X
C
[1]
[4]
C [14] · P [11] |
|
11.00 [6] [9] [11] · 11.10 [8] · 11.2 [1] [4] · 11.35 [12] | |
|
Stephania ( minor planet designation : 220 Stephania ) is a dark background asteroid from the inner regions of the asteroid belt , approximately 32 km (20 mi) in diameter. It was discovered on 19 May 1881, by Austrian astronomer Johann Palisa at the Vienna Observatory . [15] The C-type asteroid has a rotation period of 18.2 hours. [4] It was named after Princess Stéphanie of Belgium . [3]
Classification and orbit
Stephania is a non- family asteroid of the main belt's background population , when applying the Hierarchical Clustering Method to its proper orbital elements . [5] It orbits the Sun in the inner asteroid belt at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,315 days). Its orbit has an eccentricity of 0.26 and an inclination of 8 ° with respect to the ecliptic . [1]
Discovery and naming
Stephania was discovered by Johann Palisa on May 19, 1881, in Vienna . [15] It was the first discovery he made after transferring to the observatory from Pola. [3]
The name honours Crown Princess Stéphanie (1864–1945), wife of the heir-apparent Crown Prince Rudolf of Austria . The couple was married the year the asteroid was discovered. It was the first time that a naming commemorated a wedding and was given as a wedding gift. [3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 27 ). [3]
Physical characteristics
Spectral type
In the Tholen classification , this asteroid's spectrum is ambiguous, close to an X-type and somewhat similar to that of a carbonaceous C-type asteroid (CX). [4] A French spectroscopic survey that observed two dozens of these X-types classified by Tholen, determined that Stephania is in fact a carbonaceous C-type asteroid (rather than an X-type). [14] The Wide-field Infrared Survey Explorer (WISE) has also characterized it as a primitive P-type asteroid . [4] [11]
Lightcurves
Lightcurve data has also been recorded by observers at the Antelope Hill Observatory ( H09 ), which has been designated as an official observatory by the Minor Planet Center . [lower-alpha 2]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Stephania measures between 31.12 and 38.46 kilometers in diameter and its surface has a low albedo between 0.03 and 0.075. [6] [7] [8] [9] [10] [11] [12] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0607 and a diameter of 31.04 kilometers based on an absolute magnitude of 11.2. [4]
Notes
- ↑ Anonymous lightcurve –CALL-2011 (web): rotation period 18.19 hours with a brightness amplitude of 0.25 mag. Quality code of 2. Summary figures for (220) Stephania at the LCDB
- 1 2 Lightcurve plot of (220) Stephania by Robert A. Koff (a.k.a. William Koff) Antelope Hills Observatory, Colorado ( H09 ); Rotation period 18.21 hours with a brightness amplitude of 0.21 mag. Quality code of 2. Summary figures at the LCDB
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 220 Stephania" (2017-07-01 last obs.). Jet Propulsion Laboratory . Retrieved 28 October 2017 .
- ↑ "Stephanian" . Oxford English Dictionary (Online ed.). Oxford University Press . (Subscription or participating institution membership required.)
- 1 2 3 4 5 Schmadel, Lutz D. (2007). "(220) Stephania". Dictionary of Minor Planet Names – (220) Stephania . Springer Berlin Heidelberg . p. 35. doi : 10.1007/978-3-540-29925-7_221 . ISBN 978-3-540-00238-3 .
- 1 2 3 4 5 6 7 8 9 "LCDB Data for (220) Stephania" . Asteroid Lightcurve Database (LCDB) . Retrieved 28 October 2017 .
- 1 2 "Asteroid 220 Stephania" . Small Bodies Data Ferret . Retrieved 24 October 2019 .
- 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0" . NASA Planetary Data System . 12 : IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode : 2004PDSS...12.....T . Retrieved 22 October 2019 .
- 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos" . The Astrophysical Journal . 791 (2): 11. arXiv : 1406.6645 . Bibcode : 2014ApJ...791..121M . doi : 10.1088/0004-637X/791/2/121 . Retrieved 28 October 2017 .
- 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos" . The Astrophysical Journal . 814 (2): 13. arXiv : 1509.02522 . Bibcode : 2015ApJ...814..117N . doi : 10.1088/0004-637X/814/2/117 . Retrieved 28 October 2017 .
- 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey" . Publications of the Astronomical Society of Japan . 63 (5): 1117–1138. Bibcode : 2011PASJ...63.1117U . doi : 10.1093/pasj/63.5.1117 .
- 1 2 3 4 Durech, J.; Delbo', M.; Carry, B.; Hanus, J.; Alí-Lagoa, V. (July 2017). "Asteroid shapes and thermal properties from combined optical and mid-infrared photometry inversion" . Astronomy and Astrophysics . 604 : 8. arXiv : 1706.01232 . Bibcode : 2017A & A...604A..27D . doi : 10.1051/0004-6361/201730868 . Retrieved 28 October 2017 .
- 1 2 3 4 5 6 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal . 741 (2): 25. arXiv : 1109.6407 . Bibcode : 2011ApJ...741...90M . doi : 10.1088/0004-637X/741/2/90 .
- 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" . The Astronomical Journal . 152 (3): 12. arXiv : 1606.08923 . Bibcode : 2016AJ....152...63N . doi : 10.3847/0004-6256/152/3/63 . Retrieved 28 October 2017 .
- ↑ Mohamed, R. A.; Chiorny, V. G.; Dovgopol, A. N.; Shevchenko, V. G. (November 1994). "Photometry of five asteroids: 189 Phthia, 220 Stephania, 289 Nenetta, 312 Pierretta and 626 Notburga" . Astronomy and Astrophysics Supplement . 108 : 69–72. Bibcode : 1994A & AS..108...69M . Retrieved 28 October 2017 .
- 1 2 Fornasier, S.; Clark, B. E.; Dotto, E. (July 2011). "Spectroscopic survey of X-type asteroids". Icarus . 214 (1): 131–146. arXiv : 1105.3380 . Bibcode : 2011Icar..214..131F . doi : 10.1016/j.icarus.2011.04.022 .
- 1 2 "220 Stephania" . Minor Planet Center . Retrieved 28 October 2017 .
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
- Lightcurves Archived 25 July 2011 at the Wayback Machine from the Antelope Hills Observatory
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 220 Stephania at AstDyS-2, Asteroids—Dynamic Site
-
220 Stephania
at the
JPL Small-Body Database