51824 Mikeanderson (2001 OE ) is an asteroid named for astronaut Mike Anderson, who was killed in the STS-107 ("Columbia") space shuttle reentry disaster on February 1, 2003.
 51824 Mikeanderson was discovered on July 19, 2001, at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
Ilan Ramon (Hebrew: אילן רמון‎ , born Ilan Wolferman; June 20, 1954 – February 1, 2003) was an Israeli fighter pilot and later the first Israeli astronaut for NASA.
51829 Williemccool (2001 OD ) is an asteroid named for astronaut Willie McCool, who was killed in the STS-107 ("Columbia") space shuttle reentry disaster on February 1, 2003.
 51829 Williemccool was discovered on July 21, 2001 at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
51826 Kalpanachawla (2001 OB) is an asteroid named for Indian-born astronaut Kalpana Chawla, who died in the STS-107 (Columbia) space shuttle reentry disaster on February 1, 2003.
 51826 Kalpanachawla was discovered on July 19, 2001 at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
Shmuel Hadas (1931 – January 2010) was an Israeli diplomat.
 He was born to a Zionist Jewish family in Argentina.
 In 1953, he emigrated to Israel.
 In 1964 joined the Israeli Ministry of Foreign Affairs.
 In January 1986, he became the first Israeli ambassador to Spain, and in 1994 the first Israeli ambassador to the Holy See, a position he held until 1997.
51825 Davidbrown (2001 OQ ) is an asteroid named for astronaut David Brown, who was killed in the STS-107 (Columbia) space shuttle reentry disaster on February 1, 2003.
 51825 Davidbrown was discovered on July 19, 2001 at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
Columbia: The Tragic Loss is a 2004 documentary about the first Israeli astronaut, Ilan Ramon, who died when the Columbia spacecraft disintegrated upon reentry into the Earth's atmosphere.
 Two months after the disaster, Ramon's diary was found at one of the crash sites and was reconstructed by the Israel Museum along with Israeli police.
 Interviews with NASA officials and with Ilan's family offer both expert analysis of the flight and a personal look at the tragedy.
51828 Ilanramon (2001 OU ) is an asteroid named for astronaut Ilan Ramon, who was killed in the STS-107 (Columbia) space shuttle reentry disaster on February 1, 2003.
 51828 Ilanramon was discovered on July 20, 2001 at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
51827 Laurelclark (2001 OH ) is an asteroid named for astronaut Laurel Clark, who was killed in the STS-107 (Columbia) space shuttle reentry disaster on February 1, 2003.
 51827 Laurelclark was discovered on July 20, 2001 at Palomar Observatory by the JPL Near Earth Asteroid Tracking Program.
2028 Janequeo, provisional designation 1968 OB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter.
 It was discovered on 18 July 1968, by Chilean astronomers Carlos Torres and S. Cofre at the Cerro El Roble Station of Chile's National Astronomical Observatory.
 The asteroid named after the indigenous heroine Janequeo (Yanequén).

Question: When was the asteroid named after the first Israeli astronaut for NASA discovered?
Answer: July 20, 2001