Jump to content

9549 Akplatonov: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
rewrite article
Line 1: Line 1:
{{Infobox planet
#REDIRECT [[List of minor planets: 9001–10000]]
| minorplanet = yes
{{R to list entry}}
| name = 9549 Akplatonov
<!--
| background = #FFFFC0
Before reverting this redirect into an article, please
| image =
check whether the content will satisfy the guidelines for
| caption =
astronomical object notability on WP:NASTRO. In particular,
| discovery_ref = &thinsp;<ref name="jpldata" />
the object must have significant coverage from independent,
| discovered = 19 September 1985
reliable sources. Just because an object is listed in a
| discoverer = [[Nikolai Chernykh|N. Chernykh]]<br />[[Lyudmila Chernykh|L. Chernykh]]
database (like the JPL Small-Body Database) does not mean it
| discovery_site = [[Crimean Astrophysical Observatory|CrAO – Nauchnyj]]
is notable.
| mp_name = 9549 Akplatonov
-->
| alt_names = {{mp|1985 SM|2}}{{·}}{{mp|1981 TU|1}}<br />{{mp|1987 BP|3}}{{·}}{{mp|1992 JK|3}}
| named_after = [[Aleksandr Konstantinovich Platonov|Aleksandr Platonov]]<br />{{small|(computational mathematician)}}<ref name="springer" />
| mp_category = [[main-belt]]{{·}}[[Eunomia family|Eunomia]]&thinsp;<ref name="lcdb" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 27 June 2015 ([[Julian day|JD]] 2457200.5)
| uncertainty = 0
| observation_arc = {{nowrap|34.13 yr (12,467 days)}}
| aphelion = 2.8892 [[Astronomical unit|AU]]
| perihelion = 2.3246 AU
| semimajor = 2.6069 AU
| eccentricity = 0.1082
| period = 4.21 [[Julian year (astronomy)|yr]] (1,537 days)
| mean_anomaly = 215.69[[degree (angle)|°]]
| inclination = 11.147°
| asc_node = 235.21°
| arg_peri = 306.04°
| dimensions = {{val|8.238|0.173}} km<ref name="WISE" /><br />9.17 km {{small|(caculated)}}<ref name="lcdb" />
| rotation = {{val|2.8431|0.0004}} [[hour|h]]<ref name="Murphy-2011" /><br />{{val|4.7045|0.0011}} h<ref name="Waszczak-2015" />
| albedo = {{val|0.2854|0.0437}}<ref name="WISE" /><br />0.21 {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = [[S-type asteroid|S]]&thinsp;<ref name="lcdb" />
| abs_magnitude = 12.5<ref name="jpldata" />
}}


'''9549 Akplatonov''', provisional designation {{mp|1985 SM|2}}, is a stony [[asteroid]] from the middle region of the [[asteroid belt]], about 9 kilometers in diameter. It was discovered by the couple of Soviet–Russian astronomers, [[Nikolai Chernykh|Nikolai ]] and [[Lyudmila Chernykh]], at the [[Crimean Astrophysical Observatory]] in Nauchnyj, Crimea, on 19 September 1985.<ref name="MPC-Akplatonov" />
[[Category:Main-belt asteroids]]

The asteroid is a member of the [[Eunomia family]], a large group of stony [[S-type asteroid|S-type]] asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.3–2.9&nbsp;[[Astronomical unit|AU]] once every 4 years and 3 months (1,537 days). Its orbit shows an [[orbital eccentricity|eccentricity]] of 0.11 and is [[orbital inclination|tilted]] by 11 degrees to the plane of the [[ecliptic]]. The asteroid's [[rotation period]] amounts to 2.8 and 4.7 hours, determined by two divergent observations made in 2009 and 2011.<ref name="Murphy-2011" /><ref name="Waszczak-2015" /> According to the survey carried out by the [[Wide-field Infrared Survey Explorer]] and its subsequent [[NEOWISE]], mission, the body has an [[astronomical albedo|albedo]] of 0.29, while the Collaborative Asteroid Lightcurve Link assumes a somewhat more moderate albedo of 0.21.<ref name="lcdb" /><ref name="WISE" />

The minor planet was named after Russian computational mathematician, Aleksandr Konstantinovich Platonov (b.&thinsp;1931), researcher in [[orbital mechanics]] and robotics at the [[Keldysh Institute of Applied Mathematics]] since 1954. He is a pioneer in the theory and computation of satellite orbits and the control of spacecraft trajectories to the Moon and planets, as well as the motion of walking robots.<ref name="springer" />

== References ==
{{reflist
|refs=

<ref name="lcdb">{{cite web
|title=LCDB Data for (9549) Akplatonov
|publisher=Asteroid Lightcurve Database (LCDB)
|url=http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=9549%7CAkplatonov
|accessdate=December 2015}}</ref>

<ref name="jpldata">{{cite web
|type=2015-11-21 last obs.
|title=JPL Small-Body Database Browser: 9549 Akplatonov (1985 SM2)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009549
|publisher=Jet Propulsion Laboratory
|accessdate=December 2015}}</ref>

<ref name="springer">{{cite book
|url=http://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_7578
|title=Dictionary of Minor Planet Names – (19251) Totziens
|last=Schmadel |first=Lutz D.
|publisher=Springer Berlin Heidelberg
|page=698
|date=2003
|isbn=978-3-540-29925-7
|accessdate=December 2015}}</ref>

<ref name="MPC-Akplatonov">{{cite web
|title=9549 Akplatonov (1985 SM2)
|work=Minor Planet Center
|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=9549
|accessdate=December 2015}}</ref>

<ref name="WISE">{{cite journal
|authors = Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; McMillan, R. S.; Spahr, T.; Cutri, R. M.; Wright, E.; Watkins, J.; Mo, W.; Maleszewski, C.
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|access-date= December 2015}}</ref>

<ref name="Murphy-2011">{{cite journal
|authors = Murphy, Brian W.; Darragh, Andrew N.; Harp, Thomas W.; Liu, Zheyu J.; Geiss, Brian B.; Lawder, Matthew T.; McFall, Michael J.; Phifer, Kim A.
|date = July 2011
|title = Lightcurve Analysis of Asteroids (6577) 1978 VB6, 6619 Kolya, 9549 Akplatonov, (12466) 1997 AS12, (15154) 2000 FW30, and (32505) 2001 KF17
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..139M
|journal = Bulletin of the Minor Planets
|publisher = Section of the Association of Lunar and Planetary Observers
|volume = 38
|issue = 3
|pages = 139–140
|issn = 1052-8091
|bibcode = 2011MPBu...38..139M
|access-date= December 2015}}</ref>

<ref name="Waszczak-2015">{{cite journal
|authors = Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; Surace, Jason; Cheng, Yu-Chi; Ip, Wing-Huen; Kinoshita, Daisuke; Helou, George; Prince, Thomas A.; Kulkarni, Shrinivas
|date = September 2015
|title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W
|journal = The Astronomical Journal
|volume = 150
|issue = 3
|page = 35
|bibcode = 2015AJ....150...75W
|doi = 10.1088/0004-6256/150/3/75
|access-date= December 2015}}</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])
* [https://books.google.se/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
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs005001.html Discovery Circumstances: Numbered Minor Planets (5001)-(10000)] – Minor Planet Center
* {{JPL small body|title=9549 Akplatonov (1985 SM2)|id=2009549}}

{{MinorPlanets Navigator|9548 Fortran|9550 Victorblanco}}
{{Small Solar System bodies}}

{{DEFAULTSORT:Akplatonov}}
[[Category:Main-belt asteroids|009549]]
[[Category:Numbered asteroids]]
[[Category:Asteroids named for people|Akplatonov]]
[[Category:Asteroids named for people|Akplatonov]]
[[Category:Discoveries by Nikolai Chernykh]]
[[Category:Discoveries by Nikolai Chernykh]]
[[Category:Discoveries by Lyudmila Chernykh]]
[[Category:Discoveries by Lyudmila Chernykh]]
[[Category:Astronomical objects discovered in 1985]]
[[Category:Astronomical objects discovered in 1985|19850919]]
[[Category:Eunomia asteroids|009549]]


{{Beltasteroid-stub}}

Revision as of 10:55, 28 December 2015

9549 Akplatonov
Discovery [1]
Discovered byN. Chernykh
L. Chernykh
Discovery siteCrAO – Nauchnyj
Discovery date19 September 1985
Designations
9549 Akplatonov
Named after
Aleksandr Platonov
(computational mathematician)[2]
1985 SM2 · 1981 TU1
1987 BP3 · 1992 JK3
main-belt · Eunomia [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc34.13 yr (12,467 days)
Aphelion2.8892 AU
Perihelion2.3246 AU
2.6069 AU
Eccentricity0.1082
4.21 yr (1,537 days)
215.69°
Inclination11.147°
235.21°
306.04°
Physical characteristics
Dimensions8.238±0.173 km[4]
9.17 km (caculated)[3]
2.8431±0.0004 h[5]
4.7045±0.0011 h[6]
0.2854±0.0437[4]
0.21 (assumed)[3]
S [3]
12.5[1]

9549 Akplatonov, provisional designation 1985 SM2, is a stony asteroid from the middle region of the asteroid belt, about 9 kilometers in diameter. It was discovered by the couple of Soviet–Russian astronomers, Nikolai and Lyudmila Chernykh, at the Crimean Astrophysical Observatory in Nauchnyj, Crimea, on 19 September 1985.[7]

The asteroid is a member of the Eunomia family, a large group of stony S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.3–2.9 AU once every 4 years and 3 months (1,537 days). Its orbit shows an eccentricity of 0.11 and is tilted by 11 degrees to the plane of the ecliptic. The asteroid's rotation period amounts to 2.8 and 4.7 hours, determined by two divergent observations made in 2009 and 2011.[5][6] According to the survey carried out by the Wide-field Infrared Survey Explorer and its subsequent NEOWISE, mission, the body has an albedo of 0.29, while the Collaborative Asteroid Lightcurve Link assumes a somewhat more moderate albedo of 0.21.[3][4]

The minor planet was named after Russian computational mathematician, Aleksandr Konstantinovich Platonov (b. 1931), researcher in orbital mechanics and robotics at the Keldysh Institute of Applied Mathematics since 1954. He is a pioneer in the theory and computation of satellite orbits and the control of spacecraft trajectories to the Moon and planets, as well as the motion of walking robots.[2]

References

  1. ^ a b c "JPL Small-Body Database Browser: 9549 Akplatonov (1985 SM2)" (2015-11-21 last obs.). Jet Propulsion Laboratory. Retrieved December 2015. {{cite web}}: Check date values in: |accessdate= (help)
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (19251) Totziens. Springer Berlin Heidelberg. p. 698. ISBN 978-3-540-29925-7. Retrieved December 2015. {{cite book}}: Check date values in: |accessdate= (help)
  3. ^ a b c d e "LCDB Data for (9549) Akplatonov". Asteroid Lightcurve Database (LCDB). Retrieved December 2015. {{cite web}}: Check date values in: |accessdate= (help)
  4. ^ a b c "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. November 2011. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved December 2015. {{cite journal}}: Check date values in: |access-date= (help); Unknown parameter |authors= ignored (help)
  5. ^ a b "Lightcurve Analysis of Asteroids (6577) 1978 VB6, 6619 Kolya, 9549 Akplatonov, (12466) 1997 AS12, (15154) 2000 FW30, and (32505) 2001 KF17". Bulletin of the Minor Planets. 38 (3). Section of the Association of Lunar and Planetary Observers: 139–140. July 2011. Bibcode:2011MPBu...38..139M. ISSN 1052-8091. Retrieved December 2015. {{cite journal}}: Check date values in: |access-date= (help); Unknown parameter |authors= ignored (help)
  6. ^ a b "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. September 2015. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved December 2015. {{cite journal}}: Check date values in: |access-date= (help); Unknown parameter |authors= ignored (help)
  7. ^ "9549 Akplatonov (1985 SM2)". Minor Planet Center. Retrieved December 2015. {{cite web}}: Check date values in: |accessdate= (help)


Stub icon

This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=9549_Akplatonov&oldid=697121434"