The comet on 27 January 2020 by ZTF
| |
| Discovery | |
|---|---|
| Discovered by | T. Niijima and T. Urata |
| Discovery date | October 30, 1986 |
| Designations | |
| 1986 UD, 1993 U1 | |
| Orbital characteristics | |
| Epoch | November 1, 2006 |
| Perihelion | 1.465 AU |
| Semi-major axis | 3.542 AU |
| Eccentricity | 0.586 |
| Orbital period | 6.67 a |
| Inclination | 24.1675° |
| Last perihelion | February 7, 2020[1] June 24, 2013[2] October 29, 2006 |
| Next perihelion | 2026-Sep-21[3] |
Comet Urata-Niijima is a periodic comet in the Solar System discovered by Japanese astronomers Tsuneo Niijima and Takeshi Urata on October 30, 1986, at Ojima, the first orbit was calculated by Brian G. Marsden on November 5 giving an orbital period of 6.42 years.
On October 20, 1993, the comet was recovered by J. V. Scotti (Spacewatch, Kitt Peak Observatory, Arizona, United States), and on the next return on March 4, 2000, by Philippe. L. Lamy and Harold. A. Weaver using the Hubble Space Telescope.
The nucleus of the comet has a radius of 0.90 ± 0.05 kilometers, assuming a geometric albedo of 0.04.[4]
| Numbered comets | ||
|---|---|---|
| Previous 111P/Helin–Roman–Crockett |
112P/Urata–Niijima | Next 113P/Spitaler |
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