1316 Kasan

1316 Kasan

Discovery[1]
Discovered by	G. Neujmin
Discovery site	Simeiz Obs.
Discovery date	17 November 1933
Designations
MPC designation	(1316) Kasan
Named after	Kazan/Engelhardt Observatory (Russian city and observatory)[2]
Alternative designations	1933 WC · 1978 WK14
Minor planet category	Mars-crosser[1][3] · (inner)[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	83.36 yr (30,449 days)
Aphelion	3.1769 AU
Perihelion	1.6498 AU
Semi-major axis	2.4133 AU
Eccentricity	0.3164
Orbital period (sidereal)	3.75 yr (1,369 days)
Mean anomaly	145.60°
Mean motion	0° 15^m 46.44^s / day
Inclination	23.930°
Longitude of ascending node	238.25°
Argument of perihelion	148.37°
Physical characteristics
Dimensions	6.86±0.69 km[5] 7.13 km (calculated)[4]
Synodic rotation period	5.82±0.01 h[6] 5.83±0.01 h[7][a]
Geometric albedo	0.20 (assumed)[4] 0.216±0.043[5]
Spectral type	SMASS = Sr[1] · S[4]
Absolute magnitude (H)	13.10[4][5] · 13.2[1] · 13.30±0.47[8]

1316 Kasan, provisional designation 1933 WC, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 17 November 1933, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.^[3] The asteroid was named for the city of Kazan, Russia, and its nearby Engelhardt Observatory (Kazan Observatory).^[2]

Orbit and classification

Kasan is a Mars-crossing asteroid, a dynamically unstable group between the main-belt and the near-Earth populations, crossing the orbit of Mars at 1.666 AU.^[1][3]

The asteroid is on an eccentric orbit around the Sun, at a distance of 1.6–3.2 AU once every 3 years and 9 months (1,369 days; semi-major axis of 2.41 AU). Its orbit has an eccentricity of 0.32 and an inclination of 24° with respect to the ecliptic.^[1] The body's observation arc begins at Heidelberg Observatory on 20 November 1933, three days after its official discovery observation at Simeiz Observatory.^[3]

Physical characteristics

In the SMASS classification, Kasan is an Sr-subtype that transitions from the common S-type to the uncommon R-type asteroids.^[1]

Rotation period

In November 2008, a rotational lightcurve of Kasan was obtained from photometric observations by American astronomer Robert Stephens. Lightcurve analysis gave a well-defined rotation period of 5.82 hours with a brightness variation of 0.25 magnitude (U=3).^[6] Previously, a period of 5.83 hours with an amplitude of 0.26 magnitude was measured by Brian Warner at the Palmer Divide Observatory in September 2004 (U=2+).^[7][a]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Kasan measures 6.86 kilometers in diameter and its surface has an albedo of 0.216.^[5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.13 kilometers based on an absolute magnitude of 13.1.^[4]

This makes Kazan one of the largest mid-sized Mars-crossing asteroids comparable with 1065 Amundsenia (9.75 km), 1139 Atami (9 km), 1474 Beira (8.73 km), 1508 Kemi (17 km), 1011 Laodamia (7.5 km), 1727 Mette (est. 9 km), 1131 Porzia (7.13 km), 1235 Schorria (est. 9 km), 985 Rosina (8.18 km), 1310 Villigera (15.24 km) and 1468 Zomba (7 km), but smaller than the largest members of this dynamical group, namely, 132 Aethra, 2204 Lyyli and 512 Taurinensis.

Naming

This minor planet was named after the city of Kazan, the capital of the Republic of Tatarstan, Russia. It was also named in honor of the nearby Kazan Observatory (Engelhardt Observatory). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 120).^[2]

Notes

1. Lightcurve plot of 1316 Kasan, Palmer Divide Observatory, Brian D. Warner (2004). Summary figures at the LCDB

References

1. "JPL Small-Body Database Browser: 1316 Kasan (1933 WC)" (2017-03-30 last obs.). Jet Propulsion Laboratory. Retrieved 30 November 2017.
2. Schmadel, Lutz D. (2007). "(1316) Kasan". Dictionary of Minor Planet Names – (1316) Kasan. Springer Berlin Heidelberg. p. 108. doi:10.1007/978-3-540-29925-7_1317. ISBN 978-3-540-00238-3.
3. "1316 Kasan (1933 WC)". Minor Planet Center. Retrieved 30 November 2017.
4. "LCDB Data for (1316) Kasan". Asteroid Lightcurve Database (LCDB). Retrieved 30 November 2017.
5. Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data". Astronomy and Astrophysics. 603: 8. arXiv:1705.10263. Bibcode:2017A&A...603A..55A. doi:10.1051/0004-6361/201629917. Retrieved 30 November 2017.
6. Stephens, Robert D. (April 2009). "Asteroids Observed from GMARS and Santana Observatories". The Minor Planet Bulletin. 36 (2): 59–62. Bibcode:2009MPBu...36...59S. ISSN 1052-8091. Retrieved 30 November 2017.
7. Warner, Brian D. (June 2005). "Asteroid lightcurve analysis at the Palmer Divide Observatory - fall 2004". The Minor Planet Bulletin. 32 (2): 29–32. Bibcode:2005MPBu...32...29W. ISSN 1052-8091. Retrieved 30 November 2017.
8. 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 30 November 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
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 1316 Kasan at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1316 Kasan at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters