1617 Alschmitt

1617 Alschmitt
Discovery [1]
Discovered by L. Boyer
Discovery site Algiers Observatory
Discovery date 20 March 1952
Designations
MPC designation 1617 Alschmitt
Named after
 Alfred Schmitt (astronomer)[2]
1952 FB · 1929 CC1
1935 ER · 1941 HH
1947 LS · 1952 DK2
1975 AJ · A906 DC
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 109.36 yr (39943 days)
Aphelion 3.6075 AU (539.67 Gm)
Perihelion 2.7888 AU (417.20 Gm)
3.1982 AU (478.44 Gm)
Eccentricity 0.12800
5.72 yr (2089.1 d)
64.713°
0° 10m 20.388s / day
Inclination 13.267°
154.96°
24.004°
Earth MOID 1.79946 AU (269.195 Gm)
Jupiter MOID 1.38434 AU (207.094 Gm)
Jupiter Tisserand parameter 3.141
Physical characteristics
Dimensions 21.283±0.267 km[4]
21.12±2.86 km[5]
38.51 km (calculated)[3]
7.062 h (0.2943 d)[1][6]
7.0613±0.0007 h[6]
7.0602±0.0033 h[7]
0.2698±0.0205[4]
0.190±0.046[5]
0.057 (assumed)[3]
C [3]
10.8

    1617 Alschmitt, provisional designation 1952 FB, is an assumed carbonaceous asteroid dwelling in the outer parts of the main belt. It was discovered on March 20, 1952, by French astronomer Louis Boyer at Algiers Observatory, Algeria.[8]

    The asteroid orbits the Sun at a distance of 2.8–3.6 AU once every 5.72 years (2,089 days). Its orbit shows an eccentricity of 0.13 and is tilted by 13 degrees to the plane of the ecliptic.[1] It has a rotation period of 7.06 hours.[6][7] According to the surveys carried out by WISE and NEOWISE, it has a diameter of about 21 kilometers with an albedo of 0.19 and 0.27, respectively.[4][5] Conversely, the Lightcurve database project assumes the asteroid to be a carbonaceous C-type body with a significantly lower albedo of 0.06 and a larger diameter of 39 kilometers.[3]

    Boyer named the asteroid after his colleague Alfred Schmitt (1907–1973), astronomer at Algiers, Strasbourg and Quito observatories, who, 20 years earlier, had named the asteroid 1215 Boyer in his honor.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1617 Alschmitt (1952 FB)" (2015-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 23 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1617) Alschmitt. Springer Berlin Heidelberg. p. 128. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1617) Alschmitt". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; 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. Retrieved November 2015.
    5. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; 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 November 2015.
    6. 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (1617) Alschmitt". Geneva Observatory. Retrieved November 2015.
    7. 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved November 2015.
    8. ↑ "1617 Alschmitt (1952 FB)". Minor Planet Center. Retrieved November 2015.

    External links


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