| Discovery[1] | |
|---|---|
| Discovered by | G. Neujmin |
| Discovery site | Simeiz Obs. |
| Discovery date | 17 November 1933 |
| Designations | |
| (1316) Kasan | |
Named after | Kazan/Engelhardt Observatory (Russian city and observatory)[2] |
| 1933 WC · 1978 WK14 | |
| 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 | 3.1769AU |
| Perihelion | 1.6498 AU |
| 2.4133 AU | |
| Eccentricity | 0.3164 |
| 3.75yr (1,369 days) | |
| 145.60° | |
| 0° 15m 46.44s / day | |
| Inclination | 23.930° |
| 238.25° | |
| 148.37° | |
| Physical characteristics | |
| Dimensions | 6.86±0.69 km[5] 7.13 km(calculated)[4] |
| 5.82±0.01h[6] 5.83±0.01 h[7][a] | |
| 0.20(assumed)[4] 0.216±0.043[5] | |
| SMASS =Sr[1] · S[4] | |
| 13.10[4][5] · 13.2[1] · 13.30±0.47[8] | |
1316 Kasan, provisional designation1933 WC, is a stonyasteroid and sizableMars-crosser on an eccentric orbit from theasteroid belt, approximately 7 kilometers in diameter. It was discovered on 17 November 1933, by Soviet astronomerGrigory Neujmin at theSimeiz Observatory on the Crimean peninsula.[3] The asteroid was named for the city ofKazan, Russia, and its nearbyEngelhardt Observatory (Kazan Observatory).[2]
Kasan is aMars-crossing asteroid, a dynamically unstable group between the main-belt and thenear-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 aneccentricity of 0.32 and aninclination of 24° with respect to theecliptic.[1] The body'sobservation arc begins atHeidelberg Observatory on 20 November 1933, three days after its official discovery observation at Simeiz Observatory.[3]
In theSMASS classification,Kasan is an Sr-subtype that transitions from the commonS-type to the uncommonR-type asteroids.[1]
In November 2008, a rotationallightcurve ofKasan was obtained from photometric observations by American astronomerRobert Stephens. Lightcurve analysis gave a well-definedrotation period of 5.82 hours with a brightness variation of 0.25magnitude (U=3).[6] Previously, a period of 5.83 hours with an amplitude of 0.26 magnitude was measured byBrian Warner at thePalmer Divide Observatory in September 2004 (U=2+).[7][a]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Kasan measures 6.86 kilometers in diameter and its surface has analbedo of 0.216.[5] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.13 kilometers based on anabsolute magnitude of 13.1.[4]
This makesKazan one of the largest mid-sizedMars-crossing asteroids comparable with1065 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) and1468 Zomba (7 km), but smaller than the largest members of this dynamical group, namely,132 Aethra,2204 Lyyli and512 Taurinensis.
Thisminor planet was named after the city ofKazan, 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 inThe Names of the Minor Planets byPaul Herget in 1955 (H 120).[2]
