89P/Russell

{{Short description|Periodic comet with 7 year orbit}}

{{For|other comets discovered by Kenneth S. Russell|Comet Russell (disambiguation){{!}}Comet Russell}}

{{Infobox comet

| name=89P/Russell

| image=

| discoverer=K. S. Russell at Siding Spring Observatory, New South Wales, Australia

| discovery_date=28 September 1980

| designations=

| epoch= 27 June 2015

| semimajor= 3.7566 AU

| perihelion= 2.2236 AU

| aphelion= 5.281 AU

| eccentricity= 0.4081

| period=7.26 yr

| inclination= 12.06°

| last_p=14 December 2016{{cite web|url=http://www.aerith.net/comet/catalog/0089P/index.html|title= 89P/Russell 2| access-date= 15 April 2015}}

| next_p=2024-Mar-26{{cite web

|title=89P/Russell Orbit

|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=89P

|publisher=Minor Planet Center

|access-date=2017-04-07}}

}}

89P/Russell is a periodic comet in the Solar System with a current orbital period of 7.28 years.{{cite web| url=http://cometography.com/pcomets/089p.html| title= 86P/Russell 2|publisher= Gary Kronk|access-date = 15 April 2015}}

It was discovered on a photographic plate by Kenneth Russell of Siding Spring Observatory in New South Wales, Australia on 28 September 1980. Brightness was estimated at a magnitude of 17. The elliptical orbit calculated by Brian G. Marsden gave a perihelion date of 19 May 1980 and an orbital period of 7.12 years.

It has been observed on each subsequent apparition, most recently in 2009. The next perihelion is computed as 14 December 2016.