1407 Lindelöf

1407 Lindelöf, provisional designation 1936 WC, is an asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 21 November 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[12] The asteroid was named after Finnish topologist Ernst Lindelöf.[2]

1407 Lindelöf
Shape model of Lindelöf from its lightcurve
Discovery [1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date21 November 1936
Designations
(1407) Lindelof
Named after
Ernst Lindelöf
(Finnish topologist)[2]
1936 WC · 1977 FL
A905 AB
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc112.51 yr (41,093 days)
Aphelion3.5462 AU
Perihelion1.9853 AU
2.7657 AU
Eccentricity0.2822
4.60 yr (1,680 days)
231.44°
0° 12m 51.48s / day
Inclination5.8138°
268.39°
111.03°
Physical characteristics
Dimensions17.39±3.36 km[4]
19.94±3.96 km[5]
20.310±0.317 km[6]
20.75 km (derived)[3]
20.98±1.6 km[7]
23.85±1.40 km[8]
31.0941±0.0001 h[9]
31.151±0.004 h[10]
0.179±0.023[8]
0.1791 (derived)[3]
0.187±0.017[6]
0.21±0.06[5]
0.2309±0.040[7]
0.28±0.17[4]
SMASS = X [3] · S [3]
10.6[7][8] · 10.67±0.40[11] · 10.9[1][3][5][6] · 10.96[4]

    Orbit and classification

    Lindelöf orbits the Sun in the central main-belt at a distance of 2.0–3.5 AU once every 4 years and 7 months (1,680 days). Its orbit has an eccentricity of 0.28 and an inclination of 6° with respect to the ecliptic.[1] In 1905, it was first identified as A905 AB at Heidelberg Observatory, extending the body's observation arc by 31 years prior to its official discovery observation.[12]

    Physical characteristics

    In the SMASS taxonomy, Lindelöf's spectral class is that of an X-type asteroid, while the Collaborative Asteroid Lightcurve Link (CALL) considers it to be of a stony composition.[1][3]

    Rotation period and poles

    French amateur astronomer Pierre Antonini obtained a rotational lightcurve of Lindelöf from photometric observations in January 2006. Lightcurve analysis gave a well-defined and longer-than average rotation period of 31.151 hours with a brightness variation of 0.34 in magnitude (U=3).[10]

    A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 31.0941 hours (U/Q=n.a.), as well as a spin axis of (147.0°, 36°) in ecliptic coordinates (λ, β).[9]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lindelöf measures between 17.39 and 23.85 kilometers in diameter, and its surface has an albedo between and 0.179 and 0.28.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1791 and a diameter of 20.75 kilometers, with an absolute magnitude of 10.9.[3]

    Naming

    This minor planet was named for Finnish topologist Ernst Leonard Lindelöf (1870–1946), who was a professor of mathematics at Helsinki University.[2] The Lindelöf spaces are also named after him. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 127).[2]

    References
    1. "JPL Small-Body Database Browser: 1407 Lindelof (1936 WC)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
    2. Schmadel, Lutz D. (2007). "(1407) Lindelöf". Dictionary of Minor Planet Names – (1407) Lindelöf. Springer Berlin Heidelberg. p. 113. doi:10.1007/978-3-540-29925-7_1408. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1407) Lindelöf". Asteroid Lightcurve Database (LCDB). Retrieved 9 January 2017.
    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 9 January 2017.
    5. 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 9 January 2017.
    6. 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 9 January 2017.
    7. 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.
    8. 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 17 October 2019. (online, AcuA catalog p. 153)
    9. Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. Retrieved 9 January 2017.
    10. Behrend, Raoul. "Asteroids and comets rotation curves – (1407) Lindelöf". Geneva Observatory. Retrieved 9 January 2017.
    11. 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 9 January 2017.
    12. "1407 Lindelof (1936 WC)". Minor Planet Center. Retrieved 9 January 2017.

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