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词条 2010 AB78
释义

  1. First WISE discovery

  2. Orbit

      Close approaches  

  3. Physical characteristics

      Numbering and naming  

  4. References

  5. External links

{{DISPLAYTITLE:{{mp|2010 AB|78}}}}{{Infobox planet
| minorplanet = yes
| background = #FFC2E0
| name = {{mp|2010 AB|78}}
| image = 418872main wise20100122-full.jpg
| image_size = 240
| caption = Stellar field obtained by WISE. The red dot in the center is {{mp|2010 AB|78}}.
| discovery_ref =  [1]
| discoverer = WISE
| discovery_site =
| discovered = 12 January 2010
| mpc_name = {{mp|2010 AB|78}}
| mp_category = NEO{{·}}Amor [1]
Mars-crosser
| alt_names =
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 9.97 yr (3,641 days)
| aphelion = 3.4872 AU
| perihelion = 1.0216 AU
| semimajor = 2.2544 AU
| eccentricity = 0.5468
| period = 3.38 yr (1,236 days)
| mean_anomaly = 62.384°
| mean_motion = {{Deg2DMS|0.2912|sup=ms}} / day
| inclination = 33.253°
| asc_node = 316.93°
| arg_peri = 296.48°
| moid = 0.2058 AU (80.2 LD)
| mars_moid = {{nowrap|{{convert|0.1206|AU|km|abbr=on|sigfig=3}}[1]}}
| mean_diameter = {{val|1.671|0.010}} km[6]
| rotation =
| albedo = {{val|0.030|0.006}}[6]
| spectral_type =
| abs_magnitude = 18.3
}}{{mp|2010 AB|78}} is a dark asteroid on an eccentric orbit, classified as near-Earth object of the Amor group. It was first observed by the Wide-field Infrared Survey Explorer (WISE) on 12 January 2010.[1] The asteroid measures approximately 1.7 kilometers in diameter and has a low albedo of 0.03, which is rather typical for carbonaceous asteroids.

First WISE discovery

{{mp|2010 AB|78}} is expected to become the first of the many thousands of discoveries to be accredited to the WISE space telescope.[11][12] However, the official discoverer will only be defined upon the asteroid's numbering.[1]

The first observation of {{mp|2010 AB|78}} by WISE was on January 12, 2010, being observed again the next day. The Mauna Kea Observatory observed it the days 18 and 19 of January, allowing the Minor Planet Center to publish a circular on January 22 confirming the discovery.[11]

Orbit

{{mp|2010 AB|78}} orbits the Sun at a distance of 1.0–3.5 AU once every 3 years and 5 months (1,236 days). Its orbit has an eccentricity of 0.55 and an inclination of 33° with respect to the ecliptic. Due to its eccentric orbit it is also a Mars-crosser. {{mp|2010 AB|78}} has the lowest possible orbital uncertainty, which suggests that it will be numbered in the near future.

Close approaches

This near-Earth asteroid has a minimum orbital intersection distance with Earth of {{convert |0.2058 |AU |km |abbr=on |sigfig=3}}, which corresponds to 80.2 lunar distances. It does not make any notable close approaches to Earth within the next hundred years.

Physical characteristics

According to the survey carried out by the NEOWISE mission of NASA's discovering WISE observatory, {{mp|2010 AB|78}} measures 1.671 kilometers in diameter and its surface has an albedo of 0.030.[6] Objects known for such low albedos are the carbonaceous C, D and P-type asteroids.

As of 2018, no lightcurve has been obtained. The body's rotation period, shape and pole remain unknown.[21]

Numbering and naming

As of 2018, this minor planet has not been named or numbered.[1]

References

1. ^{{cite web |title = 2010 AB78 |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2010+AB78 |accessdate = 17 August 2017}}
2. ^{{cite news |title = WISE bags its first near-Earth object, 2010 AB78 |author = Lakdawalla, Emily |newspaper = The Planetary Society |date = 22 January 2010 |url = http://www.planetary.org/blogs/emily-lakdawalla/2010/2316.html |accessdate = 3 February 2018}}
3. ^{{cite web |title = The First Of Many Asteroid Finds For WISE |date = 25 January 2010 |url = http://www.spacedaily.com/reports/The_First_Of_Many_Asteroid_Finds_For_WISE_999.html |accessdate = 3 February 2018}}
4. ^{{Cite journal |display-authors = 6 |first1 = A. |last1 = Mainzer |first2 = T. |last2 = Grav |first3 = J. |last3 = Bauer |first4 = J. |last4 = Masiero |first5 = R. S. |last5 = McMillan |first6 = R. M. |last6 = Cutri |first7 = R. |last7 = Walker |first8 = E. |last8 = Wright |first9 = P. |last9 = Eisenhardt |first10 = D. J. |last10 = Tholen |first11 = T. |last11 = Spahr |first12 = R. |last12 = Jedicke |first13 = L. |last13 = Denneau |first14 = E. |last14 = DeBaun |first15 = D. |last15 = Elsbury |first16 = T. |last16 = Gautier |first17 = S. |last17 = Gomillion |first18 = E. |last18 = Hand |first19 = W. |last19 = Mo |first20 = J. |last20 = Watkins |first21 = A. |last21 = Wilkins |first22 = G. L. |last22 = Bryngelson |first23 = A. |last23 = Del Pino Molina |first24 = S. |last24 = Desai |first25 = M. |last25 = Gómez Camus |first26 = S. L. |last26 = Hidalgo |first27 = I. |last27 = Konstantopoulos |first28 = J. A. |last28 = Larsen |first29 = C. |last29 = Maleszewski |first30 = M. A. |last30 = Malkan |first31 = J.-C. |last31 = Mauduit |first32 = B. L. |last32 = Mullan |first33 = E. W. |last33 = Olszewski |first34 = J. |last34 = Pforr |first35 = A. |last35 = Saro |first36 = J. V. |last36 = Scotti |first37 = L. H. |last37 = Wasserman |date = December 2011 |title = NEOWISE Observations of Near-Earth Objects: Preliminary Results |url = https://arxiv.org/pdf/1109.6400.pdf |journal = The Astrophysical Journal |volume = 743 |issue = 2 |page = 17 |bibcode = 2011ApJ...743..156M |doi = 10.1088/0004-637X/743/2/156 |arxiv = 1109.6400 |accessdate = 17 August 2017}}
5. ^{{cite web |title = LCDB Data for (2010) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2010%7C |accessdate = 3 February 2018}}
[1][2][3][4][5]

}}

External links

  • MPEC 2010-B33, Minor Planet Electronic Circulars, 22 January 2010
  • {{NeoDys|2010AB78}}
  • {{JPL small body}}
{{Use dmy dates|date=February 2018}}{{Planetary defense}}{{Small Solar System bodies}}{{DEFAULTSORT:2010 AB78}}

5 : Amor asteroids|Minor planet object articles (unnumbered)|WISE objects|Near-Earth objects in 2010|Astronomical objects discovered in 2010

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