9916 Kibirev

{{Short description|Asteroid}}

{{Use dmy dates|date=May 2018}}

{{Infobox planet

| minorplanet = yes

| name = 9916 Kibirev

| background = #D6D6D6

| image =

| image_size =

| caption =

| discovery_ref =  

| discoverer = N. Chernykh

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

| discovered = 3 October 1978

| mpc_name = (9916) Kibirev

| alt_names = {{mp|1978 TR|2}}{{·}}{{mp|1983 VL|1}}

| pronounced =

| named_after = Sergej Kibirev
{{small|(Russian informatician)}}

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

| orbit_ref =  

| epoch = 23 March 2018 (JD 2458200.5)

| uncertainty = 0

| observation_arc = 44.52 yr (16,261 d)

| aphelion = 3.0950 AU

| perihelion = 2.6050 AU

| semimajor = 2.8500 AU

| eccentricity = 0.0860

| period = 4.81 yr (1,757 d)

| mean_anomaly = 83.251°

| mean_motion = {{Deg2DMS|0.2048|sup=ms}} / day

| inclination = 1.0178°

| asc_node = 288.18°

| arg_peri = 79.224°

| mean_diameter = {{val|5.49|u=km}} {{small|(calculated)}}
{{val|6.201|0.050|ul=km}}

| rotation = {{val|15.171|0.3802|ul=h}}
{{val|15.48|0.250|u=h}}

| albedo = {{val|0.24}} {{small|(assumed)}}
{{val|0.260|0.034}}
{{val|0.2898|0.0435}}

| spectral_type = S {{small|(assumed)}}

| abs_magnitude = 13.0
{{val|13.018|0.002}} {{small|(R)}}
{{val|13.160|0.170}} {{small|(R)}}
13.2
{{val|13.37|0.30}}
13.47

}}

9916 Kibirev, provisional designation {{mp|1978 TR|2}}, is a Koronian asteroid from the outer regions of the asteroid belt, approximately {{convert|6|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 3 October 1978, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The likely S-type asteroid has a rotation period of about 15.2 hours and was named after Russian informatician Sergej Kibirev.

Orbit and classification

File:AnimatedOrbitOf9916Kibirev.gif and Jupiter in red]]

Kibirev is a core member of the Koronis family ({{small|605}}), a very large outer asteroid family with nearly co-planar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.6–3.1 AU once every 4 years and 10 months (1,757 days; semi-major axis of 2.85 AU). Its orbit has an eccentricity of 0.09 and an inclination of 1° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar Observatory in September 1973, or 5 years prior to its official discovery observation.

Physical characteristics

Kibirev is an assumed S-type asteroid, which is also the Koronis family's overall spectral type.{{rp|23}}

= Rotation period =

In 2014, two rotational lightcurves of Kibirev were obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 15.171 and 15.48 hours with a brightness amplitude of 0.36 and 0.45 magnitude, respectively ({{small|U=2/2}}).

= Diameter and albedo =

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Kibirev measures 6.201 kilometers in diameter and its surface has an albedo between 0.260 and 0.2898.

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 5.49 kilometers based on an absolute magnitude of 13.47.

Naming

This minor planet was named after Russian Sergej Feodosievich Kibirev (born 1950), who works on new methods to process information and organizes the production of microelectronics in the Russian city of Novosibirsk. The official naming citation was published by the Minor Planet Center on 9 March 2001 ({{small|M.P.C. 42359}}).

References

{{reflist|30em|refs=

{{cite web

|type = 2018-03-28 last obs.

|title = JPL Small-Body Database Browser: 9916 Kibirev (1978 TR2)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009916

|publisher = Jet Propulsion Laboratory

|access-date = 2 May 2018}}

{{cite web

|title = 9916 Kibirev (1978 TR2)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=9916

|access-date = 2 May 2018}}

{{cite web

|title = MPC/MPO/MPS Archive

|work = Minor Planet Center

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

|access-date = 2 May 2018}}

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{{cite web

|title = Asteroid 9916 Kibirev – Nesvorny HCM Asteroid Families V3.0

|work = Small Bodies Data Ferret

|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=9916+Kibirev#Asteroid%209916%20KibirevEAR-A-VARGBDET-5-NESVORNYFAM-V3.0

|access-date = 27 October 2019}}

{{Cite book

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|pages = 297–321

|bibcode = 2015aste.book..297N

|doi = 10.2458/azu_uapress_9780816532131-ch016

|arxiv = 1502.01628

|isbn = 9780816532131|s2cid = 119280014

}}

{{cite web

|title = LCDB Data for (9916) Kibirev

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=9916%7CKibirev

|access-date = 2 May 2018}}

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|date = November 2011

|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results

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|bibcode = 2011ApJ...741...90M

|doi = 10.1088/0004-637X/741/2/90

|arxiv = 1109.6407

|s2cid = 35447010 }} ([http://iopscience.iop.org/0004-637X/741/2/68/fulltext/apj398969t1_mrt.txt catalog])

{{cite journal

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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

|journal = The Astronomical Journal

|volume = 150

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|bibcode = 2015AJ....150...75W

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{{cite journal

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|date = August 2015

|title = Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory

|journal = The Astrophysical Journal Supplement Series

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|bibcode = 2015ApJS..219...27C

|doi = 10.1088/0067-0049/219/2/27

|arxiv = 1506.08493|s2cid = 17093124 }}

{{cite journal

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|first2 = Robert |last2 = Jedicke

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|first4 = Larry |last4 = Denneau

|first5 = Mikael |last5 = Granvik

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}}