Question: What year was the man who discovered Palomar 4 born?

Context paragraphs:
6344 P-L: 6344 P-L is an Apollo, near-Earth, potentially hazardous asteroid that was discovered in the year 1960 by astronomers and asteroid searchers Tom Gehrels, Ingrid van Houten-Groeneveld, and Cornelis Johannes van Houten during the Palomar–Leiden survey.  However, since the body is still unnumbered, the discoverers have not yet been officially determined.  Last seen in 1960, it was lost, but rediscovered in 2007 as 2007 RR .  In other words, it was a lost asteroid from 1960 until it was recovered and recognized as the same object by Peter Jenniskens in 2007.

Koposov II: Koposov II is a low-luminosity globular cluster in the constellation Gemini in the halo of the Milky Way galaxy.  It was discovered, along with globular cluster Koposov I by S. Koposov et al. in 2007.  Koposov I and Koposov II were described by their discoverers as the "lowest luminosity globular clusters orbiting the Milky Way," along with AM 4, Palomar 1, and Whiting 1.

52266 Van Flandern: 52266 Van Flandern, provisional designation 1986 AD, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter.  It was discovered on 10 January 1986, by American astronomers Carolyn and Eugene Shoemaker at the Palomar Observatory in California, United States.  The asteroid was later named for American astronomer Tom Van Flandern.

Edwin Hubble: Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.  He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology and is regarded as one of the most important astronomers of all time.

Palomar 4: Palomar 4 is a globular cluster of the Milky Way galaxy.  It was discovered in 1949 by Edwin Hubble and again in 1955 by A. G. Wilson.  It is 356,000 light-years away.

Koposov I: Koposov I is a low-luminosity globular cluster in the constellation Virgo in the halo of the Milky Way galaxy.  It was discovered, along with globular cluster Koposov II by S. Koposov et al. in 2007.  Koposov I and Koposov II were described by their discoverers as the "lowest luminosity globular clusters orbiting the Milky Way," along with AM 4, Palomar 1, and Whiting 1.

SN 1961i: SN 1961i was a supernova that was discovered in June 1961 in the Messier 61 (NGC 4303) galaxy, by Milton L. Humason at the Palomar Observatory, the brightest of 16 supernovae found at Palomar that year.  Although it was originally consider by Fritz Zwicky to be the prototype of a type III supernova, subsequent researchers have classified it as a type II supernova.

4031 Mueller: 4031 Mueller, provisional designation 1985 CL, is a Hungaria asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter.  It was discovered on 12 February 1985, by American astronomer Carolyn Shoemaker at Palomar Observatory, California, and named after astronomer Jean Mueller.

Eris (dwarf planet): Eris (minor-planet designation 136199 Eris) is the most massive and second-largest dwarf planet known in the Solar System.  Eris was discovered in January 2005 by a Palomar Observatory-based team led by Mike Brown, and its identity was verified later that year.  In September 2006 it was named after Eris, the Greek goddess of strife and discord.

5731 Zeus: 5731 Zeus (1988 VP4) is an Apollo asteroid and near-Earth object discovered on November 4, 1988, by Carolyn Shoemaker at Palomar Observatory.  Based on its observed brightness and assumed albedo it is estimated to have a diameter between 2.1 and 4.7 km.

Supporting paragraphs: Palomar 4 Edwin Hubble
Answer: 1889