1696 Nurmela

1696 Nurmela
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Observatory
Discovery date 18 March 1939
Designations
MPC designation 1696 Nurmela
Named after
 Tauno Nurmela
(University of Turku)[2]
1939 FF · 1939 GL
1949 DK · 1951 YK
main-belt · Baptistina [3][4]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 76.98 yr (28118 days)
Aphelion 2.4836 AU (371.54 Gm)
Perihelion 2.0401 AU (305.19 Gm)
2.2618 AU (338.36 Gm)
Eccentricity 0.098057
3.40 yr (1242.5 d)
204.77°
0° 17m 23.064s / day
Inclination 6.0385°
21.040°
165.03°
Earth MOID 1.04141 AU (155.793 Gm)
Jupiter MOID 2.47406 AU (370.114 Gm)
Jupiter Tisserand parameter 3.605
Physical characteristics
Dimensions 10.31±0.44 km[5]
9.911±0.056 km[6]
14.64 km (calculated)[3]
10 km[7]
3.1587 h (0.13161 d)[1][8][9]
0.116±0.011[5]
0.1246±0.0166[6]
0.057 (assumed)[3]
0.125[4]
C [3]
13.0[1]

    1696 Nurmela, provisional designation 1939 FF, is a carbonaceous asteroid from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 18 March 1939.[10] It belongs to the small Baptistina family of asteroids and is its second-largest member after the family's namesake, 298 Baptistina.

    The asteroid orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,243 days). Its orbit shows an eccentricity of 0.10 and is tilted by 6 degrees to the plane of the ecliptic. It has an absolute magnitude of 12.9 and a rotation period of 3.159 hours.[8][9] The albedo of the C-type asteroid lies in the range of 0.06–0.13, according to the Akari, WISE/NEOWISE surveys and other observations and assumptions.[3][4][5][6]

    The minor planet was named in honor of Finnish academician Tauno Kalervo Nurmela (1907–1985), some time professor of Romanic philology and later chancellor of University of Turku.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1696 Nurmela (1939 FF)" (2015-10-21 last obs.). Jet Propulsion Laboratory. Retrieved 22 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1696) Nurmela. Springer Berlin Heidelberg. p. 135. ISBN 978-3-540-29925-7. Retrieved 10 November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1696) Nurmela". Asteroid Lightcurve Database (LCDB). Retrieved 10 November 2015.
    4. 1 2 3 Reddy, V.; Sanchez, J. A.; Bottke, W. F.; Gaffey, M. J.; Le Corre, L.; Masiero, J.; Mainzer, A. K. (March 2013). "Composition of (1696) Nurmela: The Second Largest Member of Baptistina Asteroid Family". 44th Lunar and Planetary Science Conference. Bibcode:2013LPI....44.1093R. Retrieved 10 November 2015.
    5. 1 2 3 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. Retrieved 10 November 2015.
    6. 1 2 3 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 10 November 2015.
    7. ↑ "Absolute Magnitude (H)". NASA/JPL.
    8. 1 2 Stephens, Robert D.; Malcolm, Glenn (September 2007). "Lightcurve Analysis of 1489 Attila and 1696 Nurmela". The Minor Planet Bulletin. 34 (3): 78. Bibcode:2007MPBu...34...78S. ISSN 1052-8091. Retrieved 10 November 2015.
    9. 1 2 Galad, Adrian; Kornos, Leonard (June 2008). "A Sample of Lightcurves from Modra". The Minor Planet Bulletin. 35 (2): 78–81. Bibcode:2008MPBu...35...78G. ISSN 1052-8091. Retrieved 10 November 2015.
    10. ↑ "1696 Nurmela (1939 FF)". Minor Planet Center. Retrieved 10 November 2015.

    External links


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