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| image_size =
| caption =
| discovery_ref =  <ref name="
| discovered = 22 May 1998▼
| discoverer = [[Lincoln Near-Earth Asteroid Research|LINEAR]]
| discovery_site = [[Lincoln Laboratory's Experimental Test Site|Lincoln Lab's ETS]]
▲ | discovered = 22 May 1998
| mpc_name = (13241) Biyo
| alt_names = {{nowrap|{{mp|1998 KM|41}}{{·}}{{mp|1975 UB|1}}}}
| pronounced =
| named_after = [[Josette Biyo]] <ref name="MPC-object" /><br />{{small|(Filipino educator)}}
| mp_category = [[main-belt]]{{·}}[[Flora family|Flora region]]<br />[[Background asteroid|background]] <ref name="
| orbit_ref =  <ref name="jpldata" />
| epoch =
| uncertainty = 0
| observation_arc =
| aphelion = 2.
| perihelion = 2.
| semimajor = 2.
| eccentricity = 0.
| period = 3.43
| mean_anomaly =
| mean_motion = {{Deg2DMS|0.
| inclination = 7.
| asc_node = 56.
| arg_peri = 93.
| mean_diameter = {{val|3.
| rotation = {{val|4.4|0.4|ul=h}}<ref
| albedo = {{val|0.24}} {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = [[S-type asteroid|S]] <ref name="lcdb" /><br />[[Asteroid color indices|V–R]] {{=}} {{val|0.380|0.03}}<ref name="Albanesi-2011" />
| abs_magnitude = 14.2<ref name="jpldata" /><br />14.3<ref name="
}}
'''13241 Biyo''', provisional designation {{mp|1998 KM|41}}, is a
== Orbit and classification ==
''Biyo'' is a non-[[Asteroid family|family]] asteroid of the main belt's [[Background asteroid|background population]] when applying the [[hierarchical clustering method]] to its [[proper orbital elements]].<ref name="AstDys-object" /><ref name="Ferret" /> Based on osculating Keplerian [[orbital elements]], the asteroid has also been classified as a member of the [[Flora family]] ({{small|[[FIN tbl#402|402]]}}), a giant [[asteroid clan]] and the largest family of stony asteroids in the main-belt.<ref name="lcdb" />
''Biyo'' is a member of the [[Flora family]], a collisional group of [[S-type asteroid]]s asteroids, and one of the largest main-belt families. It orbits the Sun in the [[Kirkwood gap|inner]] main-belt at a distance of 2.1–2.4 [[Astronomical unit|AU]] once every 3 years and 5 months (1,252 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.06 and an [[orbital inclination|inclination]] of 7[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> It was first identified as {{mp|1975 UB|1}} at the [[Karl Schwarzschild Observatory]] in 1975, extending the body's [[observation arc]] by 23 years prior to its official discovery observation at Socorro.<ref name="MPC-object" />▼
▲
== Naming ==▼
This [[minor planet]] was named after [[Josette Biyo]] (born 1958), a Filipino educator, former executive director of the Philippine Science High School System and now the director of Department of Science and Technology- Science Education Institute.<ref>http://www.sei.dost.gov.ph/</ref> The naming was part of the [[International Excellence in Teaching Award]] she received during the [[Intel International Science and Engineering Fair]] held in Louisville, Kentucky, in 2002, when she was a teacher at the Philippine Science High School in Iloilo, Philippines. Biyo was the first Asian teacher to win the Intel Excellence in Teaching Award.<ref name="MPC-object" /><ref name="Philippine-Star" /> The official {{MoMP|13241|naming citation}} was published by the [[Minor Planet Center]] on 24 July 2002 ({{small|[[Minor Planet Circulars|M.P.C.]]
== Physical characteristics ==
Line 46 ⟶ 52:
=== Rotation and shape ===
In March 2011, a rotational [[lightcurve]] of ''Biyo'' was obtained from photometric observations by Italian astronomers at the Virginio Cesarini Observatory ({{small|[[IAU code#157|157]]}}) in Frasso Sabino, Italy. Lightcurve analysis gave a [[rotation period]] of 4.4 hours (twice the original reported period solution of {{val|2.199|0.219}} in the R-band) with a brightness amplitude of 0.99 [[Magnitude (astronomy)|magnitude]], which indicates that the body has
=== Diameter and albedo ===
▲== Naming ==
▲This [[minor planet]] was named after [[Josette Biyo]] (born 1958), a Filipino educator, former executive director of the Philippine Science High School System and now the director of Department of Science and Technology- Science Education Institute.<ref>http://www.sei.dost.gov.ph/</ref> The naming was part of the [[International Excellence in Teaching Award]] she received during the [[Intel International Science and Engineering Fair]] held in Louisville, Kentucky, in 2002, when she was a teacher at the Philippine Science High School in Iloilo, Philippines. Biyo was the first Asian teacher to win the Intel Excellence in Teaching Award.<ref name="MPC-object" /><ref name="Philippine-Star" /> The official naming citation was published by the [[Minor Planet Center]] on 24 July 2002 ({{small|[[Minor Planet Circulars|M.P.C.]] {{MoMP|13241|46109}}}}).<ref name="MPC-Circulars-Archive" />
== References ==
Line 60 ⟶ 62:
<ref name="jpldata">{{cite web
|type =
|title = JPL Small-Body Database Browser: 13241 Biyo (1998 KM41)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013241
|publisher = [[Jet Propulsion Laboratory]]
|accessdate =
<ref name="MPC-object">{{cite web
Line 77 ⟶ 79:
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|accessdate = 24 April 2017}}</ref>
<ref name="Ferret">{{cite web
|title = Asteroid 13241 Biyo – Nesvorny HCM Asteroid Families V3.0
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=13241+Biyo
|accessdate = 23 November 2019}}</ref>
<ref name="AstDys-object">{{cite web
|title = Asteroid 13241 Biyo – Proper Elements
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=13241
|access-date= 23 November 2019}}</ref>
<ref name="Philippine-Star">{{cite news
Line 90 ⟶ 104:
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=13241%7CBiyo
|accessdate = 24 April 2017}} ([http://www.minorplanet.info/PHP/OneAsteroidInfo.php SearchForm])</ref>
<ref name="h">{{cite web
|title = Asteroid Size Estimator
|publisher = CNEOS NASA/JPL
|url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html
|accessdate = 23 November 2019}}</ref>
<ref name="Albanesi-2011">{{Cite journal
Line 113 ⟶ 133:
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info])
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center
* {{AstDys|13241}}
Line 123 ⟶ 142:
{{DEFAULTSORT:Biyo}}
[[Category:
[[Category:Discoveries by LINEAR|013241]]
[[Category:Minor planets named for people]]
|
Revision as of 16:04, 23 November 2019
Discovery [1] | |
---|---|
Discovered by | LINEAR |
Discovery site | Lincoln Lab's ETS |
Discovery date | 22 May 1998 |
Designations | |
(13241) Biyo | |
Named after | Josette Biyo [1] (Filipino educator) |
1998 KM41 · 1975 UB1 | |
main-belt · Flora region background [2] | |
Orbital characteristics [3] | |
Epoch 27 April 2019 (JD 2458600.5) | |
Uncertainty parameter 0 | |
Observation arc | 44.01 yr (16,073 d) |
Aphelion | 2.4215 AU |
Perihelion | 2.1263 AU |
2.2739 AU | |
Eccentricity | 0.0649 |
3.43 yr (1,252 d) | |
125.48° | |
0° 17m 14.64s / day | |
Inclination | 7.3001° |
56.739° | |
93.848° | |
Physical characteristics | |
Mean diameter | 3.9 km (calculated)[4][5] |
4.4±0.4 h[4][6] 2.199±0.219 h (half-period)[6] | |
0.24 (assumed)[4] | |
S [4] V–R = 0.380±0.03[6] | |
14.2[3] 14.3[1] | |
13241 Biyo, provisional designation 1998 KM41, is a background asteroid from the Flora region of the inner asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 22 May 1998, by the Lincoln Near-Earth Asteroid Research team (LINEAR) at the U.S. Lincoln Laboratory Experimental Test Site in Socorro, New Mexico. The presumed S-type asteroid has a rotation period of 4.4 hours and likely an elongated shape.[6] It was later named after Filipino educator Josette Biyo.[1]
Orbit and classification
Biyo is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[2][7] Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family (402), a giant asteroid clan and the largest family of stony asteroids in the main-belt.[4]
It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.4 AU once every 3 years and 5 months (1,252 days; semi-major axis of 2.27 AU). Its orbit has an eccentricity of 0.06 and an inclination of 7° with respect to the ecliptic.[3] It was first identified as 1975 UB1 at the Karl Schwarzschild Observatory in 1975, extending the body's observation arc by 23 years prior to its official discovery observation at Socorro.[1]
Naming
This minor planet was named after Josette Biyo (born 1958), a Filipino educator, former executive director of the Philippine Science High School System and now the director of Department of Science and Technology- Science Education Institute.[8] The naming was part of the International Excellence in Teaching Award she received during the Intel International Science and Engineering Fair held in Louisville, Kentucky, in 2002, when she was a teacher at the Philippine Science High School in Iloilo, Philippines. Biyo was the first Asian teacher to win the Intel Excellence in Teaching Award.[1][9] The official naming citation was published by the Minor Planet Center on 24 July 2002 (M.P.C. 46109).[10]
Physical characteristics
Rotation and shape
In March 2011, a rotational lightcurve of Biyo was obtained from photometric observations by Italian astronomers at the Virginio Cesarini Observatory (157) in Frasso Sabino, Italy. Lightcurve analysis gave a rotation period of 4.4 hours (twice the original reported period solution of 2.199±0.219 in the R-band) with a brightness amplitude of 0.99 magnitude, which indicates that the body has an elongated, non-spheroidal shape (U=2). The Italian astronomers also determined a V–R color of 0.38.[6]
Diameter and albedo
For this asteroid, no observational data has been gathered by the space-based telescopes (IRAS, Akari and WISE) that surveyed large portions of the asteroid belt.[3][4] The Collaborative Asteroid Lightcurve Link assumes an albedo for a stony asteroid of 0.24 – derived from 8 Flora, the largest member and namesake of the Flora family – and calculates a diameter of 3.92 kilometers with an absolute magnitude of 14.2.[4]
References
- ^ a b c d e f "13241 Biyo (1998 KM41)". Minor Planet Center. Retrieved 24 April 2017.
- ^ a b "Asteroid 13241 Biyo – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 23 November 2019.
- ^ a b c d "JPL Small-Body Database Browser: 13241 Biyo (1998 KM41)" (2019-10-31 last obs.). Jet Propulsion Laboratory. Retrieved 23 November 2019.
- ^ a b c d e f g "LCDB Data for (13241) Biyo". Asteroid Lightcurve Database (LCDB). Retrieved 24 April 2017. (SearchForm)
- ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 23 November 2019.
- ^ a b c d e Albanesi, Raniero; Calabresi, Massimo; Haver, Roberto (October 2011). "Photometry of Asteroid 13241 Biyo". The Minor Planet Bulletin. 38 (4): 181–182. Bibcode:2011MPBu...38..181A. ISSN 1052-8091. Retrieved 24 April 2017.
- ^ "Asteroid 13241 Biyo – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 23 November 2019.
- ^ http://www.sei.dost.gov.ph/
- ^ Fernandez, Rudy (2 February 2003). "Small planet named after Pinoy science teacher". Philippine Star. Retrieved 24 April 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 April 2017.
External links
- DOST's 50 great Men And Women Of Science – 8. Josette Biyo, The Manila Times, 2008
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 13241 Biyo at AstDyS-2, Asteroids—Dynamic Site
- 13241 Biyo at the JPL Small-Body Database