5316 Filatov

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=October 2019}}

{{Infobox planet

| minorplanet = yes

| name = 5316 Filatov

| background = #D6D6D6

| image =

| image_size =

| caption =

| discovery_ref =

| discovered = 21 October 1982

| discoverer = L. G. Karachkina

| discovery_site = {{nowrap|Crimean Astrophysical Obs.}}

| mpc_name = (5316) Filatov

| alt_names = {{mp|1982 UB|7}}{{·}}{{mp|1982 XU|3}}
{{mp|1987 SF|9}}{{·}}{{mp|1991 LV|3}}

| pronounced =

| named_after = Vladimir Filatov
{{small|(ophthalmologist and surgeon)}}

| mp_category = main-belt{{·}}{{small|(outer)}}

| orbit_ref =

| epoch = 4 September 2017 (JD 2458000.5)

| uncertainty = 0

| observation_arc = 34.44 yr (12,578 days)

| aphelion = 3.2253 AU

| perihelion = 3.0919 AU

| semimajor = 3.1586 AU

| eccentricity = 0.0211

| period = 5.61 yr (2,050 days)

| mean_anomaly = 18.907°

| mean_motion = {{Deg2DMS|0.1756|sup=ms}} / day

| inclination = 14.743°

| asc_node = 230.22°

| arg_peri = 240.87°

| dimensions = 22.95 km {{small|(calculated)}}
{{val|45.693|0.511}} km

| rotation = {{val|1061.3756|76.36}} h

| albedo = {{val|0.019|0.003}}
0.057 {{small|(assumed)}}

| spectral_type = C

| abs_magnitude = {{val|11.474|0.002}} {{small|(R)}}{{·}}11.60{{·}}11.8{{·}}11.92{{·}}{{val|11.97|0.48}}

}}

5316 Filatov, provisional designation {{mp|1982 UB|7}}, is a carbonaceous asteroid and potentially slow rotator from the outer region of the asteroid belt, approximately 30 kilometers in diameter.

The asteroid was discovered on 21 October 1982, by Russian astronomer Lyudmila Karachkina at the Crimean Astrophysical Observatory in Nauchnij on the Crimean peninsula. It was later named for surgeon Vladimir Filatov.

Orbit and classification

Filatov orbits the Sun in the outer main-belt at a distance of 3.1–3.2 AU once every 5 years and 7 months (2,050 days). Its orbit has an eccentricity of 0.02 and an inclination of 15° with respect to the ecliptic. The body's observation arc begins at Nauchnij, 2 days after its official discovery observation.

Physical characteristics

= Potentially slow rotator =

In November 2010, a rotational lightcurve of Filatov was obtained from photometric observations in the R-band at the Palomar Transient Factory in California. It gave an exceptionally long rotation period of 1061 hours with a brightness variation of 0.07 magnitude ({{small|U=1}}).

However, the fragmentary lightcurve has received a low quality rating by the Collaborative Asteroid Lightcurve Link which means that the result could be completely wrong (also see potentially slow rotator).

= Diameter and albedo =

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Filatov measures 45.69 kilometers in diameter, and its surface has an albedo of 0.019, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 22.95 kilometers with an absolute magnitude of 11.92.

Naming

This minor planet was named in honor of Vladimir Filatov (1875–1956), a Russian and Ukrainian ophthalmologist and surgeon. The official naming citation was published by the Minor Planet Center on 1 September 1993 ({{small|M.P.C. 22508}}).

References

{{reflist|30em|refs=

{{cite web

|type = 2017-03-29 last obs.

|title = JPL Small-Body Database Browser: 5316 Filatov (1982 UB7)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005316

|publisher = Jet Propulsion Laboratory

|access-date = 21 June 2017}}

{{cite book

|title = Dictionary of Minor Planet Names – (5316) Filatov

|last = Schmadel | first = Lutz D.

|publisher = Springer Berlin Heidelberg

|page = 456

|date = 2007

|isbn = 978-3-540-00238-3

|doi = 10.1007/978-3-540-29925-7_5131 |chapter = (5316) Filatov }}

{{cite web

|title = 5316 Filatov (1982 UB7)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=5316

|access-date = 16 December 2016}}

{{cite web

|title = MPC/MPO/MPS Archive

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html

|access-date = 16 December 2016}}

{{cite web

|title = LCDB Data for (5316) Filatov

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=5316%7CFilatov

|access-date = 16 December 2016}}

{{cite journal

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|date = November 2012

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|date = September 2015

|title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry

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|bibcode = 2015Icar..261...34V

|doi = 10.1016/j.icarus.2015.08.007

|arxiv = 1506.00762

|access-date= 16 December 2016}}

}}