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词条 (5407) 1992 AX
释义

  1. Orbit and classification

  2. Naming

  3. Physical characteristics

      Lightcurves    Rotation period    Satellite    Diameter and albedo  

  4. References

  5. External links

{{Infobox planet
| minorplanet = yes
| name = (5407) 1992 AX
| background = #FA8072
| image = File:Orbit of 1992 AX.gif
| image_size = 250
| caption = Orbital diagram of {{mp|1992 AX}}
| discovery_ref =  [1]
| discoverer = S. Ueda
H. Kaneda
| discovery_site = Kushiro Obs.
| discovered = 4 January 1992
| mpc_name = (5407) 1992 AX
| alt_names = 1992 AX{{·}}{{mp|1987 BH|2}}
| pronounced =
| named_after =
| mp_category = Mars crosser [1][5]
binary [6][7]
| orbit_ref =  
| epoch = 27 April 2019 (JD 2458600.5)
| uncertainty = 0
| observation_arc = 66.90 yr (24,434 d)
| aphelion = 2.3486 AU
| perihelion = 1.3279 AU
| semimajor = 1.8383 AU
| eccentricity = 0.2776
| period = 2.49 yr (910 d)
| mean_anomaly = 263.87°
| mean_motion = {{Deg2DMS|0.3955|sup=ms}} / day
| inclination = 11.390°
| asc_node = 117.74°
| arg_peri = 108.78°
| moid = 0.377 AU (147 LD)
| satellites = {{nowrap|1 {{small|(D: 780 m; P: 13.52 h)}}[6][7]}}
| mean_diameter = {{val|2.78|0.55|ul=km}}[11]
{{val|3.60|0.36|u=km}}[12]
{{val|3.8|0.4|u=km}}[13]
{{val|4.18|0.12|u=km}}[14]
| rotation = {{val|2.5488|ul=h}}[15][16]
| albedo = {{val|0.199}}[13]
{{val|0.294}}[14]
{{val|0.376}}[12]
{{val|0.40}}[11]
| spectral_type = SMASS {{=}} Sk {{·}}S [22]
B–V {{=}} {{val|0.690}}[15]
V–R {{=}} {{val|0.500}}[15]
V–I {{=}} {{val|0.840}}[15]
| abs_magnitude = 13.90[12][14]
14.0[1]
{{val|14.47}}[13][15]
}}{{mp|(5407) 1992 AX}}, provisional designation {{mp|1992 AX}}, is a stony asteroid and a synchronous binary Mars-crosser from the innermost region of the asteroid belt, approximately {{convert|3.6|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 4 January 1992, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at the Kushiro Observatory on Hokkaidō, Japan.[1] The S-type asteroid has a short rotation period of 2.5 hours.[6] Its sub-kilometer satellite was discovered in 1997.[7] As of 2018, the binary system has not been named.[1]

Orbit and classification

{{mp|1992 AX}} a member of the Mars-crossing asteroids, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.66 AU.[1][5] It orbits the Sun at a distance of 1.3–2.3 AU once every 2 years and 6 months (910 days; semi-major axis of 1.84 AU). Its orbit has an eccentricity of 0.28 and an inclination of 11° with respect to the ecliptic.

The asteroid makes occasional close approaches to Mars. Its next close approach, on 22 January 2027, will bring it {{convert|0.0753|AU|km|abbr=on|disp=flip}} from Mars. The body's observation arc begins with a precovery taken at Palomar Observatory in November 1951, or more than 40 years prior to its official discovery observation at Kushiro.[1]

Naming

This minor planet was numbered by the Minor Planet Center on 9 December 1992 ({{small|M.P.C. 21249}}).[41] As of 2018, it has not been named.[1]

Physical characteristics

{{mp|1992 AX}} has been characterized as a common, stony S-type asteroid.[22] In the SMASS taxonomy, it is an Sk-subtype, that transitions between the S and K-type asteroids. The body's color indices of 0.690 (B–V), 0.500 (V–R) and 0.840 (V–I) were also determined.[15]

Lightcurves

Rotation period

Since 1997, several rotational lightcurves of {{mp|1992 AX}} have been obtained from photometric observations by Petr Pravec and collaborating astronomers. Best-rated lightcurve analysis gave a rotation period of 2.5488 hours with a consolidated brightness amplitude between 0.10 and 0.12 magnitude ({{small|U=2/3}}).[6][15][16] The results supersedes a tentative period determination of 3.6 hours by Marc Buie ({{small|U=1}}).[6]

Satellite

During the observations in January 1997, it was also revealed that {{mp|1992 AX}} is a synchronous binary asteroid with a minor-planet moon in its orbit.[15] The satellite measures approximately 780 meters in diameter, or about 20% of its primary, and has an orbital period of 13.52 hours with an estimated semi-major axis of 5.8 kilometers for its very circular orbit.[7] Observations by Pravec in January and February 2012 confirmed the binary nature of this asteroid, as well as its rotational and orbital periods.[6] The satellite's provisional designation is S/1997 (5407) 1.

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite, the Spitzer Space Telescope and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), {{mp|1992 AX}} measures between 2.78 and 4.18 kilometers in diameter and its surface has an albedo between 0.199 and 0.40.[11][13][14]

In 2017, a study by WISE dedicated to Mars-crossing asteroids determined a diameter of 3.60 kilometers with a high albedo of 0.376.[12] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and derives a diameter of 3.79 kilometers based on an absolute magnitude of 14.47.[6] The Johnston's archive gives an effective (combined) diameter of 3.98 kilometers with 3.9 and 0.78 kilometers for is primary and secondary body, respectively.[5][7]

References

1. ^1 2 3 4 5 6 7 8 9 {{cite web |title = 5407 (1992 AX) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=5407 |accessdate = 19 November 2018}}
2. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 19 November 2018}}
3. ^1 2 3 {{cite web |title = Asteroid (5407) 1992 AX |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=5407 |accessdate = 19 November 2018}}
4. ^1 2 3 4 5 {{cite web |title = Asteroids with Satellites Database – (450894) 2008 BT18 |work = Johnston's Archive |last = Johnston |first= Wm. Robert |date = 18 February 2017 |url = http://www.johnstonsarchive.net/astro/astmoons/am-05407.html |accessdate = 19 November 2018}}
5. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (5407) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=5407%7C |accessdate = 19 November 2018}}
6. ^1 2 3 4 {{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 |url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |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 |access-date= 19 November 2018}} (online, [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
7. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = F. |last1 = Marchis |first2 = J. E. |last2 = Enriquez |first3 = J. P. |last3 = Emery |first4 = M. |last4 = Mueller |first5 = M. |last5 = Baek |first6 = J. |last6 = Pollock |first7 = M. |last7 = Assafin |first8 = R. |last8 = Vieira Martins |first9 = J. |last9 = Berthier |first10 = F. |last10 = Vachier |first11 = D. P. |last11 = Cruikshank |first12 = L. F. |last12 = Lim |first13 = D. E. |last13 = Reichart |first14 = K. M. |last14 = Ivarsen |first15 = J. B. |last15 = Haislip |first16 = A. P. |last16 = LaCluyze |date = November 2012 |title = Multiple asteroid systems: Dimensions and thermal properties from Spitzer Space Telescope and ground-based observations |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221.1130M |journal = Icarus |volume = 221 |issue = 2 |pages = 1130–1161 |bibcode = 2012Icar..221.1130M |doi = 10.1016/j.icarus.2012.09.013 |arxiv = 1604.05384 |access-date= 19 November 2018}}
8. ^1 2 3 4 {{Cite journal |first1 = V. |last1 = Alí-Lagoa |first2 = M. |last2 = Delbo' |date = July 2017 |title = Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data |url = https://arxiv.org/pdf/1705.10263.pdf |journal = Astronomy and Astrophysics |volume = 603 |page = 8 |bibcode = 2017A&A...603A..55A |doi = 10.1051/0004-6361/201629917 |arxiv = 1705.10263 |access-date= 19 November 2018}}
9. ^1 2 3 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = R. M. |last4 = Cutri |first5 = E. A. |last5 = Kramer |first6 = T. |last6 = Grav |first7 = J. |last7 = Masiero |first8 = S. |last8 = Sonnett |first9 = E. L. |last9 = Wright |date = September 2016 |title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos |url = https://arxiv.org/pdf/1606.08923.pdf |journal = The Astronomical Journal |volume = 152 |issue = 3 |page = 12 |bibcode = 2016AJ....152...63N |doi = 10.3847/0004-6256/152/3/63 |arxiv = 1606.08923 |access-date= 19 November 2018}}
10. ^1 2 3 4 5 6 7 8 {{Cite journal |display-authors = 6 |first1 = Petr |last1 = Pravec |first2 = Lenka |last2 = Sarounová |first3 = David L. |last3 = Rabinowitz |first4 = Michael D. |last4 = Hicks |first5 = Marek |last5 = Wolf |first6 = Yurij N. |last6 = Krugly |first7 = Fiodor P. |last7 = Velichko |first8 = Vasilij G. |last8 = Shevchenko |first9 = Vasilij G. |last9 = Chiorny |first10 = Ninel M. |last10 = Gaftonyuk |first11 = Guy |last11 = Genevier |date = July 2000 |title = Two-Period Lightcurves of 1996 FG 3, 1998 PG, and (5407) 1992 AX: One Probable and Two Possible Binary Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2000Icar..146..190P |journal = Icarus |volume = 146 |issue = 1 |pages = 190–203 |bibcode = 2000Icar..146..190P |doi = 10.1006/icar.2000.6375 |access-date= 19 November 2018}}
11. ^1 2 {{Cite journal |display-authors = 6 |first1 = P. |last1 = Pravec |first2 = P. |last2 = Scheirich |first3 = P. |last3 = Kusnirák |first4 = L. |last4 = Sarounová |first5 = S. |last5 = Mottola |first6 = G. |last6 = Hahn |first7 = P. |last7 = Brown |first8 = G. |last8 = Esquerdo |first9 = N. |last9 = Kaiser |first10 = Z. |last10 = Krzeminski |first11 = D. P. |last11 = Pray |first12 = B. D. |last12 = Warner |first13 = A. W. |last13 = Harris |first14 = M. C. |last14 = Nolan |first15 = E. S. |last15 = Howell |first16 = L. A. M. |last16 = Benner |first17 = J.-L. |last17 = Margot |first18 = A. |last18 = Galád |first19 = W. |last19 = Holliday |first20 = M. D. |last20 = Hicks |first21 = Yu. N. |last21 = Krugly |first22 = D. |last22 = Tholen |first23 = R. |last23 = Whiteley |first24 = F. |last24 = Marchis |first25 = D. R. |last25 = DeGraff |first26 = A. |last26 = Grauer |first27 = S. |last27 = Larson |first28 = F. P. |last28 = Velichko |first29 = W. R. |last29 = Cooney |first30 = R. |last30 = Stephens |first31 = J. |last31 = Zhu |first32 = K. |last32 = Kirsch |first33 = R. |last33 = Dyvig |first34 = L. |last34 = Snyder |first35 = V. |last35 = Reddy |first36 = S. |last36 = Moore |first37 = S. |last37 = Gajdos |first38 = J. |last38 = Világi |first39 = G. |last39 = Masi |first40 = D. |last40 = Higgins |first41 = G. |last41 = Funkhouser |first42 = B. |last42 = Knight |first43 = S. |last43 = Slivan |first44 = R. |last44 = Behrend |first45 = M. |last45 = Grenon |first46 = G. |last46 = Burki |first47 = R. |last47 = Roy |first48 = C. |last48 = Demeautis |first49 = D. |last49 = Matter |first50 = N. |last50 = Waelchli |first51 = Y. |last51 = Revaz |first52 = A. |last52 = Klotz |first53 = M. |last53 = Rieugné |first54 = P. |last54 = Thierry |first55 = V. |last55 = Cotrez |first56 = L. |last56 = Brunetto |first57 = G. |last57 = Kober |date = March 2006 |title = Photometric survey of binary near-Earth asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006Icar..181...63P |journal = Icarus |volume = 181 |issue = 1 |pages = 63–93 |bibcode = 2006Icar..181...63P |doi = 10.1016/j.icarus.2005.10.014 |access-date= 19 November 2018}}
12. ^1 2 {{Cite journal |first1 = Juan A. |last1 = Sanchez |first2 = René |last2 = Michelsen |first3 = Vishnu |last3 = Reddy |first4 = Andreas |last4 = Nathues |date = July 2013 |title = Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids |url = https://arxiv.org/pdf/1302.4449.pdf |journal = Icarus |volume = 225 |issue = 1 |pages = 131–140 |bibcode = 2013Icar..225..131S |doi = 10.1016/j.icarus.2013.02.036 |arxiv = 1302.4449 |access-date= 19 November 2018}}
[1][2][3][4][5][6][7][8][9][10][11][12]

}}

External links

  • Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • [https://www.minorplanetcenter.net/iau/lists/NumberedMPs005001.html Discovery Circumstances: Numbered Minor Planets (5001)-(10000)] – Minor Planet Center
  • {{AstDys|5407}}
  • {{JPL small body}}
{{Use dmy dates|date=November 2018}}{{Minor planets navigator |5406 Jonjoseph |number=5407 |5408 Thé}}{{Small Solar System bodies}}{{DEFAULTSORT:1992 AX}}

6 : Mars-crossing asteroids|Discoveries by Hiroshi Kaneda|Discoveries by Seiji Ueda|Binary asteroids|Sk-type asteroids (SMASS)|Astronomical objects discovered in 1992
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