1965 van de Kamp

(1965) van de Kamp, provisional designation 2521 P-L, is a stony asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S Palomar Observatory, California.[8] It was later named after Dutch astronomer Peter van de Kamp.[2]

(1965) van de Kamp
Discovery[1]
Discovered byC. J. van Houten
I. van Houten-G.
T. Gehrels
Discovery sitePalomar Obs.
Discovery date24 September 1960
Designations
(1965) van de Kamp
Named after
Peter van de Kamp
(Dutch astronomer)[2]
2521 P-L · 1927 QG
1956 TN
main-belt · (middle)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc89.57 yr (32,717 days)
Aphelion2.8424 AU
Perihelion2.2934 AU
2.5679 AU
Eccentricity0.1069
4.11 yr (1,503 days)
246.99°
0° 14m 22.2s / day
Inclination2.2200°
88.196°
343.42°
Physical characteristics
Dimensions11.30 km (calculated)[3]
11.72±0.55 km[4]
13.606±0.289 km[5]
36 h[6]
0.151±0.024[5]
0.20 (assumed)[3]
0.225±0.022[4]
S[3]
11.90[4] · 12.00[5] · 12.1[1][3] · 12.28±0.33[7]

    Orbit and classification

    The S-type asteroid orbits the Sun in the central main-belt at a distance of 2.3–2.8 AU once every 4 years and 1 month (1,503 days). Its orbit has an eccentricity of 0.11 and an inclination of 2° with respect to the ecliptic.[1] The asteroid was first identified as 1927 QG at Heidelberg Observatory in 1927. Its first used observation was taken at Goethe Link Observatory in 1956, extending the body's observation arc by 4 years prior to its official discovery observation.[8]

    Palomar–Leiden survey

    The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets.[9]

    Physical characteristics

    In February 2011, a fragmentary and inconclusive rotational lightcurve was obtained for this asteroid. It gave a longer than average rotation period of at least 36 hours with a brightness amplitude of 0.5 magnitude (U=1).[6]

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 11.8 and 13.6 kilometers in diameter and its surface has an albedo of 0.151 and 0.225, respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.3 kilometers with an absolute magnitude of 12.1.[3]

    Naming

    This minor planet was named after Dutch astronomer Peter van de Kamp (1901–1995), director of Sproul Observatory and known for his research on astrometric binaries.[2] The approved naming citation was published by the Minor Planet Center on 1 December 1979 (M.P.C. 5038).[10]

    References
    1. "JPL Small-Body Database Browser: 1965 van de Kamp (2521 P-L)" (2017-03-28 last obs.). Jet Propulsion Laboratory. Retrieved 2 July 2017.
    2. Schmadel, Lutz D. (2007). "(1965) van de Kamp". Dictionary of Minor Planet Names – (1965) van de Kamp. Springer Berlin Heidelberg. p. 158. doi:10.1007/978-3-540-29925-7_1966. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1965) van de Kamp". Asteroid Lightcurve Database (LCDB). Retrieved 30 November 2016.
    4. 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. (online, AcuA catalog p. 153)
    5. 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 30 November 2016.
    6. Hayes-Gehrke, Melissa A.; Fromm, Tim; Junghans, Paige; Lochan, Ivan; Murphy, Sean (October 2011). "Lightcurves for 1965 van de Kamp and 4971 Hoshinohiroba" (PDF). The Minor Planet Bulletin. 38 (4): 204–205. Bibcode:2011MPBu...38..204H. Archived from the original (PDF) on 30 November 2016. Retrieved 30 November 2016.
    7. 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 30 November 2016.
    8. "1965 van de Kamp (2521 P-L)". Minor Planet Center. Retrieved 30 November 2016.
    9. "Minor Planet Discoverers". Minor Planet Center. 14 November 2016. Retrieved 30 November 2016.
    10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 November 2016.

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