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{{Use dmy dates|date=October 2019}}
#REDIRECT [[List of minor planets: 6001–7000#001]]
{{Infobox planet
{{R to list entry}}
| minorplanet = yes
| name = 6025 Naotosato
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| discovered = 30 December 1992
| discoverer = [[Takeshi Urata|T. Urata]]
| discovery_site = [[Nihondaira Observatory|Nihondaira Obs.]]
| mpc_name = (6025) Naotosato
| alt_names = {{mp|1992 YA|3}}{{·}}{{mp|1954 SG|1}}<br />1965 UO{{·}}1977 BK<br />{{mp|1983 EE|1}}{{·}}{{mp|1986 TL|11}}<br />{{mp|1987 YS|2}}{{·}}{{mp|1990 HF|2}}<br />{{mp|1991 RS|29}}
| pronounced =
| named_after = [[Naoto Satō]]<br />{{small|(Japanese astronomer)}}<ref name="springer" />
| mp_category = [[main-belt]]{{·}}[[Eos family|Eos]]&thinsp;<ref name="lcdb" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| uncertainty = 0
| observation_arc = 62.68 yr (22,895 days)
| aphelion = 3.2334 [[Astronomical unit|AU]]
| perihelion = 2.8116 AU
| semimajor = 3.0225 AU
| eccentricity = 0.0698
| period = 5.25 [[Julian year (astronomy)|yr]] (1,919 days)
| mean_anomaly = 276.73[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.1876|sup=ms}} / day
| inclination = 8.9985°
| asc_node = 280.24°
| arg_peri = 160.02°
| dimensions = 17.80 km {{small|(calculated)}}<ref name="lcdb" /><br />{{val|18.442|0.135}}<ref name="Masiero-2014" /><br />{{val|19.90|0.91}} km<ref name="AKARI" /><br />{{val|19.968|0.172}} km<ref name="WISE" />
| rotation = {{val|10}} [[Hour|h]]<ref name="geneva-obs" />
| albedo = 0.14 {{small|(assumed)}}<ref name="lcdb" /><br />{{val|0.1475|0.0099}}<ref name="WISE" /><br />{{val|0.162|0.016}}<ref name="AKARI" /><br />{{val|0.188|0.040}}<ref name="Masiero-2014" />
| spectral_type = [[S-type asteroid|S]]&thinsp;<ref name="lcdb" />
| abs_magnitude = 11.2<ref name="AKARI" /><ref name="WISE" />{{·}}11.5<ref name="jpldata" /><ref name="lcdb" />{{·}}{{val|11.70|0.28}}<ref name="Veres-2015" />
}}

'''6025 Naotosato''', provisional designation {{mp|1992 YA|3}}, is an Eoan [[asteroid]] from the outer region of the [[asteroid belt]], approximately 19 kilometers in diameter. It was discovered on 30 December 1992, by Japanese astronomer [[Takeshi Urata]] at the [[Nihondaira Observatory]] in Oohira, Japan.<ref name="MPC-Naotosato" /> The asteroid was named after Japanese amateur astronomer [[Naoto Satō]].<ref name="springer" />

== Orbit and classification ==

''Naotosato'' is a member of the [[Eos family]] ({{small|[[FIN tbl#606|606]]}}), the largest [[asteroid family]] in the [[Kirkwood gap|outer]] main belt, consisting of nearly 10,000 asteroids.

It orbits the Sun at a distance of 2.8–3.2&nbsp;[[Astronomical unit|AU]] once every 5 years and 3 months (1,919 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.07 and an [[orbital inclination|inclination]] of 9[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The first observation was made at [[Goethe Link Observatory]] in 1954, extending the asteroid's [[observation arc]] by 38 years prior to its discovery.<ref name="MPC-Naotosato" />

== Physical characteristics ==

=== Rotation period ===

In September 2009, a rotational [[lightcurve]] of ''Naotosato'' was obtained from photometric observations by French astronomer [[René Roy (astronomer)|René Roy]]. The fragmentary lightcurve gave a longer-than average [[rotation period]] of 10 hours with a brightness amplitude of 0.20 in [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=1]]}}).<ref name="geneva-obs" />

=== Diameter and albedo ===

According to the surveys carried out by the Japanese [[Akari (satellite)|Akari]] satellite and the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Naotosato'' measures between 18.4 and 20.0 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] between 0.148 and 0.188,<ref name="Masiero-2014" /><ref name="AKARI" /><ref name="WISE" /> while the ''Collaborative Asteroid Lightcurve Link'' assumes an albedo of 0.14 and calculates a diameter of 17.8 kilometers with an [[absolute magnitude]] of 11.5.<ref name="lcdb" />

== Naming ==

This [[minor planet]] was named after Japanese amateur astronomer [[Naoto Satō]] (born 1953), by profession a junior high school science teacher and a prolific [[List of minor planet discoverers|discoverer of minor planets]] from his private Chichibu Observatory himself. He has also prediscovered [[C/1989 Y2]], a [[Comet#Long period|parabolic comet]] credited to McKenzie–[[Henry Norris Russell|Russell]].<ref name="springer" /> The official naming citation was published by the [[Minor Planet Center]] on 2 February 1999 ({{small|[[Minor Planet Circulars|M.P.C.]] 33786}}).<ref name="MPC-Circulars-Archive" />

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
|type = 2017-06-03 last obs.
|title = JPL Small-Body Database Browser: 6025 Naotosato (1992 YA3)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006025
|archive-url = https://web.archive.org/web/20200918024047/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006025
|url-status = dead
|archive-date = 18 September 2020
|publisher = [[Jet Propulsion Laboratory]]
|access-date = 21 June 2017}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (6025) Naotosato
|last = Schmadel | first = Lutz D.
|publisher = [[Springer Berlin Heidelberg]]
|page = 504
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_5598 |chapter = (6025) Naotosato }}</ref>

<ref name="MPC-Naotosato">{{cite web
|title = 6025 Naotosato (1992 YA3)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=6025
|access-date = 27 July 2016}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 27 July 2016}}</ref>

<ref name="geneva-obs">{{cite web
|title = Asteroids and comets rotation curves – (6025) Naotosato
|last = Behrend |first = Raoul
|publisher = [[Geneva Observatory]]
|url = http://obswww.unige.ch/~behrend/page5cou.html#006025
|access-date = 27 July 2016}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (6025) Naotosato
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=6025%7CNaotosato
|access-date = 27 July 2016}}</ref>

<ref name="AKARI">{{cite journal
|display-authors = 6
|first1 = Fumihiko |last1 = Usui
|first2 = Daisuke |last2 = Kuroda
|first3 = Thomas G. |last3 = Müller
|first4 = Sunao |last4 = Hasegawa
|first5 = Masateru |last5 = Ishiguro
|first6 = Takafumi |last6 = Ootsubo
|first7 = Daisuke |last7 = Ishihara
|first8 = Hirokazu |last8 = Kataza
|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
|first11 = Munetaka |last11 = Ueno
|first12 = Hideo |last12 = Matsuhara
|first13 = Takashi |last13 = Onaka
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=6025 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])</ref>

<ref name="WISE">{{cite journal
|display-authors = 6
|first1 = A. |last1 = Mainzer
|first2 = T. |last2 = Grav
|first3 = J. |last3 = Masiero
|first4 = E. |last4 = Hand
|first5 = J. |last5 = Bauer
|first6 = D. |last6 = Tholen
|first7 = R. S. |last7 = McMillan
|first8 = T. |last8 = Spahr
|first9 = R. M. |last9 = Cutri
|first10 = E. |last10 = Wright
|first11 = J. |last11 = Watkins
|first12 = W. |last12 = Mo
|first13 = C. |last13 = Maleszewski
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407}}</ref>

<ref name="Veres-2015">{{cite journal
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762
|access-date= 27 July 2016}}</ref>

<ref name="Masiero-2014">{{cite journal
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = T. |last2 = Grav
|first3 = A. K. |last3 = Mainzer
|first4 = C. R. |last4 = Nugent
|first5 = J. M. |last5 = Bauer
|first6 = R. |last6 = Stevenson
|first7 = S. |last7 = Sonnett
|date = August 2014
|title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M
|journal = The Astrophysical Journal
|volume = 791
|issue = 2
|page = 11
|bibcode = 2014ApJ...791..121M
|doi = 10.1088/0004-637X/791/2/121
|arxiv = 1406.6645
|access-date= 5 December 2016}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs005001.html Discovery Circumstances: Numbered Minor Planets (5001)-(10000)] – Minor Planet Center
* {{AstDys|6025}}
* {{JPL small body}}

{{Minor planets navigator |6024 Ochanomizu |number=6025 |6026 Xenophanes}}
{{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:Naotosato}}
{{DEFAULTSORT:Naotosato}}
[[Category:Main-belt asteroids]]
[[Category:Eos asteroids|006025]]
[[Category:Asteroids named for people]]
[[Category:Discoveries by Takeshi Urata]]
[[Category:Astronomical objects discovered in 1992]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1992|19921230]]

Latest revision as of 13:03, 9 January 2024

6025 Naotosato
Discovery [1]
Discovered byT. Urata
Discovery siteNihondaira Obs.
Discovery date30 December 1992
Designations
(6025) Naotosato
Named after
Naoto Satō
(Japanese astronomer)[2]
1992 YA3 · 1954 SG1
1965 UO · 1977 BK
1983 EE1 · 1986 TL11
1987 YS2 · 1990 HF2
1991 RS29
main-belt · Eos [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc62.68 yr (22,895 days)
Aphelion3.2334 AU
Perihelion2.8116 AU
3.0225 AU
Eccentricity0.0698
5.25 yr (1,919 days)
276.73°
0° 11m 15.36s / day
Inclination8.9985°
280.24°
160.02°
Physical characteristics
Dimensions17.80 km (calculated)[3]
18.442±0.135[4]
19.90±0.91 km[5]
19.968±0.172 km[6]
10 h[7]
0.14 (assumed)[3]
0.1475±0.0099[6]
0.162±0.016[5]
0.188±0.040[4]
S [3]
11.2[5][6] · 11.5[1][3] · 11.70±0.28[8]

6025 Naotosato, provisional designation 1992 YA3, is an Eoan asteroid from the outer region of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 30 December 1992, by Japanese astronomer Takeshi Urata at the Nihondaira Observatory in Oohira, Japan.[9] The asteroid was named after Japanese amateur astronomer Naoto Satō.[2]

Orbit and classification

[edit]

Naotosato is a member of the Eos family (606), the largest asteroid family in the outer main belt, consisting of nearly 10,000 asteroids.

It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,919 days). Its orbit has an eccentricity of 0.07 and an inclination of 9° with respect to the ecliptic.[1] The first observation was made at Goethe Link Observatory in 1954, extending the asteroid's observation arc by 38 years prior to its discovery.[9]

Physical characteristics

[edit]

Rotation period

[edit]

In September 2009, a rotational lightcurve of Naotosato was obtained from photometric observations by French astronomer René Roy. The fragmentary lightcurve gave a longer-than average rotation period of 10 hours with a brightness amplitude of 0.20 in magnitude (U=1).[7]

Diameter and albedo

[edit]

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Naotosato measures between 18.4 and 20.0 kilometers in diameter and its surface has an albedo between 0.148 and 0.188,[4][5][6] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 17.8 kilometers with an absolute magnitude of 11.5.[3]

Naming

[edit]

This minor planet was named after Japanese amateur astronomer Naoto Satō (born 1953), by profession a junior high school science teacher and a prolific discoverer of minor planets from his private Chichibu Observatory himself. He has also prediscovered C/1989 Y2, a parabolic comet credited to McKenzie–Russell.[2] The official naming citation was published by the Minor Planet Center on 2 February 1999 (M.P.C. 33786).[10]

References

[edit]
  1. ^ a b c d "JPL Small-Body Database Browser: 6025 Naotosato (1992 YA3)" (2017-06-03 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 21 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(6025) Naotosato". Dictionary of Minor Planet Names – (6025) Naotosato. Springer Berlin Heidelberg. p. 504. doi:10.1007/978-3-540-29925-7_5598. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (6025) Naotosato". Asteroid Lightcurve Database (LCDB). Retrieved 27 July 2016.
  4. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 5 December 2016.
  5. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  6. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  7. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (6025) Naotosato". Geneva Observatory. Retrieved 27 July 2016.
  8. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 27 July 2016.
  9. ^ a b "6025 Naotosato (1992 YA3)". Minor Planet Center. Retrieved 27 July 2016.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 July 2016.
[edit]
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