1694 Kaiser

1694 Kaiser
Discovery [1]
Discovered by H. van Gent
Discovery site Johannesburg Obs.
(Leiden Southern Station)
Discovery date 29 September 1934
Designations
MPC designation 1694 Kaiser
Named after
 Frederik Kaiser
(astronomer)[2]
1934 SB · 1960 SD
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 80.88 yr (29,542 days)
Aphelion 3.0142 AU
Perihelion 1.7754 AU
2.3948 AU
Eccentricity 0.2586
3.71 yr (1,354 days)
272.44°
Inclination 11.102°
13.424°
356.20°
Physical characteristics
Dimensions 13.84±1.27 km[4]
15.678±0.175 km[5]
28.42 km (calculated)[3]
13.02 h[6]
13.23±0.02 h[7]
9 h[lower-alpha 1]
0.241±0.046[4]
0.1659±0.0088[5]
0.057 (assumed)[3]
B–V = 0.735
U–B = 0.415
Tholen = GC
C [3]
11.46

    1694 Kaiser, provisional designation 1934 SB, is an eccentric, carbonaceous asteroid from the inner regions of the asteroid belt, roughly 16 kilometers in diameter. It was discovered by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa on 29 September 1934.[8]

    The asteroid orbits the Sun at a distance of 1.8–3.0 AU once every 3.71 years (1,354 days). Its eccentric orbit of 0.26 is inclined by 11 degrees towards the plane of the ecliptic. The GC-/C-type asteroid has a noticeably high geometric albedo of 0.241±0.046 and 0.1659±0.0088, determined by the Akari and NEOWISE surveys, respectively, while the Lightcurve Database project assumes a much lower value of 0.06.[3][4][5]

    Photometric observations in 2006 at the Palmer Divide Observatory in Colorado (see video in § External links) were used to generate a light-curve with a period of 13.23±0.02 hours and a variation in brightness of 0.13±0.02 magnitude.[7] A refined observation in 2012 gave a period of 13.02±0.01 hours with a higher amplitude of 0.32.[6]

    The asteroid was named in honor of Dutch astronomer Frederik Kaiser (1808–1872), the director of the Leiden Observatory from 1837–1872. He founded the new Leiden Observatory and stimulated Dutch astronomical research. Frederick Kaiser is also honored by the lunar and Martian craters Kaiser.[2] Originally, the asteroid was erroneously named Kapteyn (MPC 2822), and only later it was noticed that the Duch astronomer Jacobus Kapteyn was already honored by the minor planet 818 Kapteynia.

    References

    1. ↑ CALL (2011web) gives a rotation period of 9 hours. Summary figures at LCDB Data for (1694) Kaiser
    1. 1 2 "JPL Small-Body Database Browser: 1694 Kaiser (1934 SB)" (2015-08-17 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1694) Kaiser. Springer Berlin Heidelberg. p. 135. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1694) Kaiser". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 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 November 2015.
    5. 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved November 2015.
    6. 1 2 Warner, Brian D. (April 2013). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2012 September - 2013 January". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 40 (2): 71–80. Bibcode:2013MPBu...40...71W. ISSN 1052-8091. Retrieved November 2015.
    7. 1 2 Warner, Brian D. (September 2006). "Asteroid lightcurve analysis at the Palmer Divide Observatory - late 2005 and early 2006". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 33 (3): 58–62. Bibcode:2006MPBu...33...58W. ISSN 1052-8091. Retrieved November 2015.
    8. ↑ "1694 Kaiser (1934 SB)". Minor Planet Center. Retrieved November 2015.

    External links


    This article is issued from Wikipedia - version of the Sunday, January 24, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.