1817 Katanga

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Main-belt asteroid

title: "1817 Katanga" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["phocaea-asteroids", "discoveries-by-cyril-jackson-(astronomer)", "named-minor-planets", "astronomical-objects-discovered-in-1939"] description: "Main-belt asteroid" topic_path: "general/phocaea-asteroids" source: "https://en.wikipedia.org/wiki/1817_Katanga" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Main-belt asteroid ::

::data[format=table title="Infobox planet"]

Field	Value
minorplanet	yes
name	1817 Katanga
background	#D6D6D6
discovery_ref
discovered	20 June 1939
discoverer	C. Jackson
discovery_site	Johannesburg Obs.
mpc_name	(1817) Katanga
alt_names	1939 MB1928 KD
1950 NK1971 BG
named_after	Katanga Province
(Congo, Dem. Rep.)
mp_category	main-belt Phocaea
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	77.58 yr (28,337 days)
aphelion	2.8258 AU
perihelion	1.9172 AU
semimajor	2.3715 AU
eccentricity	0.1916
period	3.65 yr (1,334 days)
mean_anomaly	173.17°
mean_motion	/ day
inclination	25.709°
asc_node	88.723°
arg_peri	140.27°
dimensions	km
km
km (IRAS:14)
16.28 km (derived)
rotation	h
h
h
albedo	(IRAS:14)
0.2421 (derived)

| | spectral_type | S | | abs_magnitude | 10.7811.111.80 | ::

| spectral_type = S | abs_magnitude = 10.7811.111.80

1817 Katanga, provisional designation , is a stony Phocaea asteroid in from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 20 June 1939, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa. It is named for the Katanga Province.

Orbit and classification

The S-type asteroid is a member of the Phocaea family, a smaller population of asteroids with similar orbital characteristics named after their largest member, 25 Phocaea. Katanga orbits the Sun in the inner main-belt at a distance of 1.9–2.8 AU once every 3 years and 8 months (1,334 days). Its orbit has an eccentricity of 0.19 and an inclination of 26° with respect to the ecliptic. * Katanga*s observation arc begins with its official discovery observation in 1939, as its first observation made at Heidelberg Observatory in 1928, remained unused ().

Lightcurves

In April 2008, a rotational lightcurve of Katanga was obtained from photometric observations by American astronomer Brian D. Warner at his Palmer Divide Observatory in Colorado. It gave a rotation period of 8.481 hours with a brightness variation of 0.30 magnitude (). The quality of this result supersedes two periods previously obtained by astronomers Stefano Sposetti and Glenn Malcolm in May and June 2001, respectively ().

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Katanga measures between 9.76 and 15.90 kilometers in diameter, and its surface has an albedo between 0.133 and 0.353. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.242 and a diameter of 16.28 kilometers with an absolute magnitude of 11.1.

Naming

This minor planet was named after the Katanga Province, a rich mining region in the Democratic Republic of the Congo in Central Africa. The approved naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5183).

References

|type = 2017-01-18 last obs. |title = JPL Small-Body Database Browser: 1817 Katanga (1939 MB) |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001817 |publisher = Jet Propulsion Laboratory |accessdate = 1 July 2017}}

|title = Dictionary of Minor Planet Names – (1817) Katanga |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 145 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1818 |chapter = (1817) Katanga }}

|title = 1817 Katanga (1939 MB) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1817 |accessdate = 15 December 2016}}

|title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 15 December 2016}}

|title = Asteroids and comets rotation curves – (1817) Katanga |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#001817 |accessdate = 15 December 2016}}

|title = LCDB Data for (1817) Katanga |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1817%7CKatanga |accessdate = 15 December 2016}}

|first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |journal = NASA Planetary Data System |volume = 12 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |accessdate = 22 October 2019}}

|display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |access-date= 15 December 2016}}

|author = Malcolm, G. |date = June 2002 |title = Rotational Periods and Lightcurves of 445 Edna, 1817 Katanga and 1847 Stobbe |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002MPBu...29...28M |journal = The Minor Planet Bulletin |volume = 29 |pages = 28–29 |bibcode = 2002MPBu...29...28M |access-date= 15 December 2016}}

|author = Warner, Brian D. |date = October 2008 |title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory: February-May 2008 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..163W |journal = The Minor Planet Bulletin |volume = 35 |issue = 4 |pages = 163–166 |issn = 1052-8091 |bibcode = 2008MPBu...35..163W |access-date= 15 December 2016}}

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::