C/1957 U1 (Latyshev–Wild–Burnham)

Lore & Background

The comet was first spotted by Ivan N. Latyshev while observing the RR Lyr variable star X Arietis on the night of 16 October 1957, who estimated its apparent magnitude at 8. Robert Burnham Jr. independently discovered it three days later and reported his observation to the Lowell Observatory for verification, but unfavorable weather prevented follow-up observations there. The comet's existence was confirmed when reports arrived that Paul Wild had spotted it a few hours before Burnham. Their discoveries were announced by the International Astronomical Union on 23 October 1957. Precovery images from the Sonneberg Sky Patrol dating from 2, 3, and 5 October were later found.

The comet made its closest approach to Earth on 21 October 1957 at a distance of 0.13 AU. On 20 October, W. Wenzel reported its magnitude as 6, and E. Leutenegger as 6.2. P. Finsler noted the comet had a short tail. The comet was last observed on 25 October near the border of the southern constellations Grus and Microscopium by Henry L. Giclas in two photographic exposures, appearing as a fuzzy trail. Elizabeth Roemer tried unsuccessfully to recover the comet on 17 February 1958.

Orbital calculations were difficult due to few observations, but prediscovery ephemerides from Sonneberg Observatory enabled Michael P. Candy to calculate a parabolic trajectory on 23 October 1957. Brian G. Marsden and Ichiro Hasegawa followed up a month later, but large differences remained in the calculations. Based on Candy's calculations, the comet should have reached perihelion by 5 December 1957, provided it had not disintegrated beforehand.

Reader's Guide

The significance of C/1957 U1 lies in its multiple independent discoveries and the challenges it posed for orbital determination. As the first comet discovered by Robert Burnham Jr., it marks a notable early achievement in his career. The comet's brief observational window—only about nine days from first sighting to last observation—and the difficulty in calculating its orbit highlight the limitations of early comet tracking. The discovery of a potential meteor shower, the Kappa Aurigids, in 2014, consisting of 45 meteors with similar mean orbits to the comet, suggests that C/1957 U1 might have a highly eccentric elliptical orbit rather than a purely parabolic trajectory. This connection adds to its legacy by linking a historically observed comet to an annual meteor shower active between 11 and 31 October, peaking on 20 October. The comet's legacy is also tied to the collaborative nature of its discovery, involving astronomers from three different countries, and the use of precovery images to refine its path.

A Quiet Life in the Desert Sky

Robert Burnham Jr. entered the world in Chicago in 1931, the son of Robert Sr. and Lydia. When he was nine, the family relocated to Prescott, Arizona, a move that would shape the rest of his existence. He completed high school there in 1949, and that single diploma marked the absolute end of his formal schooling. From that point forward, his education came not from classrooms but from the night sky itself. Described as a naturally shy individual, Burnham kept a small circle of acquaintances, never took a spouse, and devoted the bulk of his waking hours to peering through a telescope he had constructed with his own hands. The high desert of Arizona, with its long stretches of dark, clear nights, became his true university. There was no grand institutional pedigree behind him, no doctoral thesis, no departmental affiliation. His credentials were the hours logged at the eyepiece and the quiet, solitary patience of a man who preferred the company of distant stars to the company of people.

Comets, Asteroids, and the Blink Comparator

The autumn of 1957 brought Burnham his first comet discovery, an event that generated significant local press coverage and, crucially, caught the eye of Lowell Observatory in Flagstaff. The following year, he was brought on board to assist with a survey of stellar proper motion, a task that required him to spend long sessions at a blink comparator, comparing photographic plates to detect subtle shifts in star positions. It was during this period of meticulous plate work that the discoveries really accelerated. Together with his colleague Norman G. Thomas, Burnham identified five additional comets, among them 56P/Slaughter-Burnham, and catalogued well over fifteen hundred asteroids. His list of comet discoveries ultimately reached six in total, and his asteroid credits included the Mars-crossing body 3397 Leyla. The work was painstaking, repetitive, and largely unglamorous, yet it produced a remarkable haul of new solar-system objects from a man whose highest academic credential remained a high school diploma earned nearly a decade earlier.

Building a Handbook in the Margins

While his official duties at Lowell kept him occupied with the blink comparator, Burnham poured nearly every spare hour into a personal project that would outlast his career at the observatory. The Celestial Handbook, subtitled An Observer's Guide to the Universe Beyond the Solar System, was never an institutionally funded or endorsed undertaking; Lowell provided no official backing for the writing. The work wove together a substantial introductory treatment of astronomy with detailed catalog entries spanning every constellation, covering thousands of stars and deep-sky objects visible through modest telescopes in granular, meticulous detail. Burnham first released the material as a loose-leaf serial beginning in 1966, and Dover Publications issued a revised three-volume edition in 1978. Amateur astronomy magazines reviewed it favorably, and it quickly became a bestseller within its niche. It remains in print today and is widely regarded as a cornerstone of amateur astronomical literature, a reference that generations of backyard observers still reach for when they want to know what lies beyond the solar system.

A Name That Became a Shorthand

The final chapter of Burnham's life was marked by profound sadness. He passed away on March 20, 1993, in poverty and isolation, far removed from the recognition his work had earned in the observing community. The main-belt asteroid 3467 Bernheim was later named in his memory, a small but permanent marker in the sky he had loved. Yet his cultural footprint proved far larger than a single numbered rock. In a 1997 profile for the Phoenix New Times, writer Tony Ortega drew a striking comparison: Burnham's name had become to deep-sky observers what Audubon is to birders or Webster to the perpetually unsure speller—a shorthand so embedded in the community that it needed no explanation. Ortega likened the three-volume work to a portable natural-history museum of the cosmos, serving as travel guide, historical reference, and encyclopedia all at once. Across its 2,138 pages, data tables sit alongside technical explanations, illustrations, historical asides, and fragments of ancient verse. No other popular astronomical text has filled that particular space, and few scientific works match it for the blend of rigorous utility and genuine wonder.