Dark Ursula asteroid from the outer regions of the asteroid belt
1306 Scythia , provisional designation 1930 OB , is a dark Ursula
asteroid from the outer regions of the
asteroid belt , approximately 72 kilometers in diameter. It was discovered on 22 July 1930, by Soviet astronomer
Grigory Neujmin at the
Simeiz Observatory on the Crimean peninsula.
[16] The asteroid was named for the historic region of
Scythia .
Orbit and classification
Scythia is a member of the
Ursula family (
631 ),
[5] a mid-sized
asteroid family in the
outer main-belt.
[17] : 23 It orbits the Sun at a distance of 2.9–3.4
AU once every 5 years and 7 months (2,041 days;
semi-major axis of 3.15 AU). Its orbit has an
eccentricity of 0.09 and an
inclination of 15
° with respect to the
ecliptic .
[1] The body's
observation arc begins with its official discovery observation at Simeiz in July 1930.
[16]
Physical characteristics
In the
Tholen classification , Scythia is a stony
S-type asteroid ,
[1]
[4] unlike the overall
spectral type of the
Ursula family which is that of a
C- and
X-type .
[17] : 23
Rotation period
In September 2003, a rotational
lightcurve of Scythia was obtained from photometric observations by
Robert Stephens at the Santana Observatory in California. Lightcurve analysis gave a
rotation period of 15.05 hours with a brightness variation of 0.15
magnitude (
U=2 ).
[13] In August 2008,
Pierre Antonini measured a better period solution of 7.525 hours (or half the period) and an amplitude of 0.25 magnitude (
U=3 ).
[12]
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
Wide-field Infrared Survey Explorer , Scythia measures between 66.780 and 83.65 kilometers in diameter and its surface has a low
albedo between 0.034 and 0.052.
[6]
[7]
[8]
[9]
[10]
[11]
[14]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0512 and a diameter of 67.14 kilometers based on an
absolute magnitude of 9.71.
[4]
Naming
This
minor planet was named after the ancient region of
Scythia , located east of the Black Sea. The official naming citation was mentioned in
The Names of the Minor Planets by
Paul Herget in 1955 (
H 119 ).
[3]
References
^
a
b
c
d
e
f
g
h
"JPL Small-Body Database Browser: 1306 Scythia (1930 OB)" (2017-07-01 last obs.).
Jet Propulsion Laboratory . Retrieved 19 December 2017 .
^
"Scythian" .
Oxford English Dictionary (Online ed.).
Oxford University Press . (Subscription or
participating institution membership required.)
^
a
b Schmadel, Lutz D. (2007). "(1306) Scythia". Dictionary of Minor Planet Names .
Springer Berlin Heidelberg . p. 107.
doi :
10.1007/978-3-540-29925-7_1307 .
ISBN
978-3-540-00238-3 .
^
a
b
c
d
e
"LCDB Data for (1306) Scythia" . Asteroid Lightcurve Database (LCDB). Retrieved 19 December 2017 .
^
a
b
"Asteroid 1306 Scythia – Nesvorny HCM Asteroid Families V3.0" . Small Bodies Data Ferret . Retrieved 26 October 2019 .
^
a
b
c
d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012).
"Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids" . The Astrophysical Journal Letters . 759 (1): 5.
arXiv :
1209.5794 .
Bibcode :
2012ApJ...759L...8M .
doi :
10.1088/2041-8205/759/1/L8 . Retrieved 19 December 2017 .
^
a
b
c
d 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 .
^
a
b
c
d 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 .
^
a
b
c
d 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 19 December 2017 .
^
a
b
c
d 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 .
^
a
b
c
d 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 . (
online ,
AcuA catalog p. 153 )
^
a
b Behrend, Raoul.
"Asteroids and comets rotation curves – (1306) Scythia" . Geneva Observatory. Retrieved 19 December 2017 .
^
a
b Stephens, Robert D. (June 2004).
"Photometry of 804 Hispania, 899 Jokaste, 1306 Scythia, and 2074 Shoemaker" . The Minor Planet Bulletin . 31 (2): 40–41.
Bibcode :
2004MPBu...31...40S .
ISSN
1052-8091 . Retrieved 19 December 2017 .
^
a
b 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 .
^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015).
"Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results" . Icarus . 261 : 34–47.
arXiv :
1506.00762 .
Bibcode :
2015Icar..261...34V .
doi :
10.1016/j.icarus.2015.08.007 . Retrieved 19 December 2017 .
^
a
b
"1306 Scythia (1930 OB)" . Minor Planet Center . Retrieved 19 December 2017 .
^
a
b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV . pp. 297–321.
arXiv :
1502.01628 .
Bibcode :
2015aste.book..297N .
doi :
10.2458/azu_uapress_9780816532131-ch016 .
ISBN
9780816532131 .
External links