1743 Schmidt

1743 Schmidt
Discovery [1]
Discovered by Palomar–Leiden survey
C. J. van Houten, I. van Houten-Groeneveld and Tom Gehrels
Discovery site Palomar Obs.
Discovery date 24 September 1960
Designations
MPC designation (1743) Schmidt
Named after
 Bernhard Schmidt [2]
4109 P–L · 1931 BJ
1939 CN · 1943 EA
1947 GD · 1951 JU
1952 QD
main-belt
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 86.29 yr (31,518 days)
Aphelion 2.8073 AU
Perihelion 2.1394 AU
2.4734 AU
Eccentricity 0.1350
3.89 yr (1,421 days)
50.245°
0° 15m 12.24s / day
Inclination 6.3575°
189.64°
359.55°
Earth MOID 1.1416 AU
Physical characteristics
Dimensions 17.3 km
19.338±0.105[3]
17.45 h (0.727 d)
0.057±0.005[3]
0.0603 ± 0.011
B–V = 0.620[1]
U–B = 0.260[1]
12.48[1]

    1743 Schmidt, also designated 4109 P-L, is an asteroid from the asteroid belt, about 17 kilometers in diameter. It was discovered on September 24, 1960, by Cornelis van Houten and Ingrid van Houten-Groeneveld at Leiden, on photographic plates taken by Tom Gehrels at Palomar.

    Orbit and characteristics

    Schmidt orbits the Sun in the inner main-belt at a distance of 2.1–2.8 AU once every 3 years and 11 months (1,421 days). Its orbit has an eccentricity of 0.14 and an inclination of 6° with respect to the ecliptic.[1]

    Schmidt has a rotation period of 17.5 hours and a geometric albedo of 0.06.[1]

    Survey designation

    The 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 Cornelis van Houten and Ingrid van Houten-Groeneveld at Leiden Observatory. The trio are credited with several thousand asteroid discoveries.

    Naming

    This minor planet was named after Baltic German optician and astronomer Bernhard Schmidt (1879–1935), the inventor of the Schmidt camera.[2]

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 1743 Schmidt (4109 P-L)" (2017-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2017.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1743) Schmidt. Springer Berlin Heidelberg. p. 138. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.
    3. 1 2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 14 June 2017.


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