271P/van Houten–Lemmon (previously P/1960 S1 and P/2012 TB36) is a short-period comet discovered in 1966 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld on eight Palomar plates taken by Tom Gehrels between 24 September and 26 October 1960 as a hazy object of 17th magnitude. It was considered lost and designated D/1960 S1 until recovered by the Mount Lemmon Survey on 17 September 2012.
|Discovered by||C. J. van Houten and I. van Houten-Groeneveld|
|Orbital characteristics A|
|Semi-major axis||6.9878 AU|
|Orbital period||18.47 yr|
- "Reports on the Progress of Astronomy: Comets". Quarterly Journal of the Royal Astronomical Society. 8: 274. September 1967. Bibcode:1967QJRAS...8..274.
- Roemer, Elizabeth (December 1966). "Comet Notes". Publications of the Astronomical Society of the Pacific. 78 (466): 556. Bibcode:1966PASP...78..555R. doi:10.1086/128418.
- D/1960 S1 orbit bu Kazuo Kinoshita
- MPEC 2012-U98 : P/1960 S1 = 2012 TB36 (van Houten-Lemmon)