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{{Use dmy dates|date=October 2019}}
{{Infobox planet
{{Infobox planet
| minorplanet = yes
| minorplanet = yes
| width = 25em
| name = 1374 Isora
| bgcolour = #FFFFC0
| background = #FA8072
| apsis =
| image =
| name = Isora
| symbol =
| caption =
| discovery_ref = <ref name="jpldata" />
| image =
| discovered = 21 October 1935
| caption =
| discoverer = [[Eugène Delporte|E. Delporte]]
| discovery = yes
| discovery_site = [[Royal Observatory of Belgium|Uccle Obs.]]
| discovery_ref =
| mpc_name = (1374) Isora
| discoverer = [[Delporte, E.]]
| alt_names = 1935 UA
| discovery_site = [[Uccle]]
| named_after = Constructed female name<br />{{small|("Rosi" spelled backwards)}}<ref name="springer" />
| discovered = October 21, 1935
| mp_category = [[Mars-crosser]]<ref name="jpldata" /><ref name="MPC-Isora" /><ref name="lcdb" />
| designations = yes
| orbit_ref = <ref name="jpldata" />
| mp_name = 1374
| epoch = 16 February 2017 ([[Julian day|JD]] 2457800.5)
| alt_names = 1935 UA
| mp_category =
| uncertainty = 0
| observation_arc = 81.05 yr (29,604 days)
| orbit_ref =
| aphelion = 2.8775 [[Astronomical unit|AU]]
| epoch = May 14, 2008
| perihelion = 1.6230 AU
| aphelion = 2.8756488
| semimajor = 2.2502 AU
| perihelion = 1.6247376
| eccentricity = 0.2788
| semimajor =
| period = 3.38 [[Julian year (astronomy)|yr]] (1,233 days)
| eccentricity = 0.2779564
| mean_anomaly = 44.987[[Degree (angle)|°]]
| period = 1232.9008215
| mean_motion = {{Deg2DMS|0.2920|sup=ms}} / day
| avg_speed =
| inclination = 5.29620
| inclination = 5.2943°
| asc_node = 302.62129
| asc_node = 302.56°
| arg_peri = 60.988°
| mean_anomaly = 190.89662
| moid = 0.6290 AU
| arg_peri = 60.98533
| dimensions = 5.48 km {{small|(derived)}}<ref name="lcdb" />
| satellites =
| rotation = {{val|8|2}} [[Hour|h]]<ref name="Wisniewski-1997" /><br />{{val|36.699|0.001}} h<ref name="Stephens-2014e" />
| physical_characteristics = yes
| albedo = 0.20 {{small|(assumed)}}<ref name="lcdb" />
| dimensions =
| spectral_type = [[SMASS classification|SMASS]] = Sq<ref name="jpldata" />{{·}}[[S-type asteroid|S]]<ref name="lcdb" /><ref name="Veres-2015" /><ref name="Carry-2016" />
| mass =
| abs_magnitude = 13.00<ref name="Carry-2016" />{{·}}13.3<ref name="jpldata" />{{·}}{{val|13.32|0.32}}<ref name="Veres-2015" />{{·}}{{val|13.67|0.15}}<ref name="lcdb" /><ref name="Wisniewski-1997" />
| density =
| surface_grav =
| escape_velocity =
| sidereal_day =
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo =
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 13.5
}}
}}
'''1374 Isora''' (1935 UA) is a [[Mars-crossing asteroid]] discovered on October 21, 1935 by [[Delporte, E.]] at [[Uccle]].
== External links ==
*[http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1374+Isora JPL Small-Body Database Browser on 1374 Isora]


'''1374 Isora''', provisional designation {{mp|1935 UA}}, is a stony [[asteroid]] and eccentric [[Mars-crosser]] from the innermost regions of the [[asteroid belt]], approximately 5 kilometers in diameter. It was discovered on 21 October 1935, by Belgian astronomer [[Eugène Delporte]] at [[Uccle Observatory]] in Belgium.<ref name="MPC-Isora" />
{{Reflist}}


== Orbit and classification ==
{{Minor planets navigator|1373 Cincinnati|1375 Alfreda}}
{{Small Solar System bodies}}


In the [[SMASS classification|SMASS]] taxonomy, ''Isora'' is classified as a Sq-type, an intermediary between the abundant [[S-type asteroid|S]] and rather rare [[Q-type asteroid|Q]]-type asteroids. It orbits the Sun at a distance of 1.6–2.9&nbsp;[[Astronomical unit|AU]] once every 3 years and 5 months (1,233 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.28 and an [[orbital inclination|inclination]] of 5[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> ''Isora''{{'}}s [[observation arc]] begins with its official discovery observation at Uccle, as no [[precoveries]] were taken and no prior identifications were made.<ref name="MPC-Isora" />
{{DEFAULTSORT:Isora}}
[[Category:Mars-crosser asteroids]]
[[Category:Discoveries by Eugène Joseph Delporte]]
[[Category:Astronomical objects discovered in 1935]]


== Physical characteristics ==


In January 2014, a rotational [[light-curve]] of ''Isora'' was obtained by American astronomer [[Robert D. Stephens]] at the Center for Solar System Studies (CS3) in California. Light-curve analysis gave a longer than average [[rotation period]] of 36.699 hours with a brightness variation of 0.12 [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=2+]]}}). However, a second period solution of 18.35 hours is also possible.<ref name="Stephens-2014e" /> The result supersedes photometric observations taken by [[Wiesław Z. Wiśniewski]] in 1989, which rendered a fragmentary light-curve with a period of 8 hours ({{small|[[LCDB quality code|U=1]]}}).<ref name="Wisniewski-1997" />
{{mars-crosser-asteroid-stub}}


The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 5.48 kilometers using an absolute magnitude of 13.67.<ref name="lcdb" />
[[de:(1374) Isora]]

[[eo:1374 Isoro]]
== Naming ==
[[fa:سیارک ۱۳۷۴]]

[[it:1374 Isora]]
''Isora'' is the backwards spelled feminine name "Rosi" with an appended "a".<ref name="springer" /> Naming was proposed by [[Gustav Stracke]] (1887–1943) – astronomer at the German [[Astronomisches Rechen-Institut]], and after whom the minor planet [[1019 Strackea]] is named – and first cited by [[Paul Herget]] in his ''[[The Names of the Minor Planets]]'' in 1955 ({{small|[[Herget's discovery circumstances|H 125]]}}).<ref name="springer" />
[[la:1374 Isora]]

[[hu:1374 Isora]]
== References ==
[[no:1374 Isora]]
{{reflist
[[nn:1374 Isora]]
|refs=
[[pl:1374 Isora]]

[[sk:1374 Isora]]
<ref name="jpldata">{{cite web
[[sr:1374 Isora]]
|type = 2016-11-08 last obs.
[[tl:1374 Isora]]
|title = JPL Small-Body Database Browser: 1374 Isora (1935 UA)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001374
|publisher = [[Jet Propulsion Laboratory]]
|accessdate = 11 January 2017}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (1374) Isora
|last = Schmadel | first = Lutz D.
|publisher = [[Springer Berlin Heidelberg]]
|page = 111
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1375 |chapter = (1374) Isora }}</ref>

<ref name="MPC-Isora">{{cite web
|title = 1374 Isora (1935 UA)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1374
|accessdate = 11 January 2017}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (1374) Isora
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1374%7CIsora
|accessdate = 11 January 2017}}</ref>

<ref name="Wisniewski-1997">{{Cite journal
|first1 = W. Z. |last1 = Wisniewski
|first2 = T. M. |last2 = Michalowski
|first3 = A. W. |last3 = Harris
|first4 = R. S. |last4 = McMillan
|date = March 1995
|title = Photoelectric Observations of 125 Asteroids
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W
|journal = Abstracts of the Lunar and Planetary Science Conference
|volume = 26
|pages = 1511
|bibcode = 1995LPI....26.1511W
|access-date= 11 January 2017}}</ref>

<ref name="Stephens-2014e">{{Cite journal
|author = Stephens, Robert D.
|date = July 2014
|title = Asteroids Observed from CS3: 2014 January - March
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..171S
|journal = The Minor Planet Bulletin
|volume = 41
|issue = 3
|pages = 171–175
|issn = 1052-8091
|bibcode = 2014MPBu...41..171S
|access-date= 11 January 2017}}</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= 11 January 2017}}</ref>

<ref name="Carry-2016">{{Cite journal
|first1 = B. |last1 = Carry
|first2 = E. |last2 = Solano
|first3 = S. |last3 = Eggl
|first4 = F. E. |last4 = DeMeo
|date = April 2016
|title = Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016Icar..268..340C
|journal = Icarus
|volume = 268
|pages = 340–354
|bibcode = 2016Icar..268..340C
|doi = 10.1016/j.icarus.2015.12.047
|access-date= 11 January 2017|arxiv = 1601.02087 }}</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/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|1374}}
* {{JPL small body}}

{{Minor planets navigator |1373 Cincinnati |number=1374 |1375 Alfreda}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:Isora}}
[[Category:Mars-crossing asteroids|001374]]
[[Category:Discoveries by Eugène Joseph Delporte]]
[[Category:Named minor planets]]
[[Category:Sq-type asteroids (SMASS)|001374]]
[[Category:Astronomical objects discovered in 1935|19351021]]

Latest revision as of 15:34, 25 December 2023

1374 Isora
Discovery[1]
Discovered byE. Delporte
Discovery siteUccle Obs.
Discovery date21 October 1935
Designations
(1374) Isora
Named after
Constructed female name
("Rosi" spelled backwards)[2]
1935 UA
Mars-crosser[1][3][4]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc81.05 yr (29,604 days)
Aphelion2.8775 AU
Perihelion1.6230 AU
2.2502 AU
Eccentricity0.2788
3.38 yr (1,233 days)
44.987°
0° 17m 31.2s / day
Inclination5.2943°
302.56°
60.988°
Earth MOID0.6290 AU
Physical characteristics
Dimensions5.48 km (derived)[4]
8±2 h[5]
36.699±0.001 h[6]
0.20 (assumed)[4]
SMASS = Sq[1] · S[4][7][8]
13.00[8] · 13.3[1] · 13.32±0.32[7] · 13.67±0.15[4][5]

1374 Isora, provisional designation 1935 UA, is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 21 October 1935, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium.[3]

Orbit and classification

[edit]

In the SMASS taxonomy, Isora is classified as a Sq-type, an intermediary between the abundant S and rather rare Q-type asteroids. It orbits the Sun at a distance of 1.6–2.9 AU once every 3 years and 5 months (1,233 days). Its orbit has an eccentricity of 0.28 and an inclination of 5° with respect to the ecliptic.[1] Isora's observation arc begins with its official discovery observation at Uccle, as no precoveries were taken and no prior identifications were made.[3]

Physical characteristics

[edit]

In January 2014, a rotational light-curve of Isora was obtained by American astronomer Robert D. Stephens at the Center for Solar System Studies (CS3) in California. Light-curve analysis gave a longer than average rotation period of 36.699 hours with a brightness variation of 0.12 magnitude (U=2+). However, a second period solution of 18.35 hours is also possible.[6] The result supersedes photometric observations taken by Wiesław Z. Wiśniewski in 1989, which rendered a fragmentary light-curve with a period of 8 hours (U=1).[5]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 5.48 kilometers using an absolute magnitude of 13.67.[4]

Naming

[edit]

Isora is the backwards spelled feminine name "Rosi" with an appended "a".[2] Naming was proposed by Gustav Stracke (1887–1943) – astronomer at the German Astronomisches Rechen-Institut, and after whom the minor planet 1019 Strackea is named – and first cited by Paul Herget in his The Names of the Minor Planets in 1955 (H 125).[2]

References

[edit]
  1. ^ a b c d e f "JPL Small-Body Database Browser: 1374 Isora (1935 UA)" (2016-11-08 last obs.). Jet Propulsion Laboratory. Retrieved 11 January 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1374) Isora". Dictionary of Minor Planet Names – (1374) Isora. Springer Berlin Heidelberg. p. 111. doi:10.1007/978-3-540-29925-7_1375. ISBN 978-3-540-00238-3.
  3. ^ a b c "1374 Isora (1935 UA)". Minor Planet Center. Retrieved 11 January 2017.
  4. ^ a b c d e f "LCDB Data for (1374) Isora". Asteroid Lightcurve Database (LCDB). Retrieved 11 January 2017.
  5. ^ a b c Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. 26: 1511. Bibcode:1995LPI....26.1511W. Retrieved 11 January 2017.
  6. ^ a b Stephens, Robert D. (July 2014). "Asteroids Observed from CS3: 2014 January - March". The Minor Planet Bulletin. 41 (3): 171–175. Bibcode:2014MPBu...41..171S. ISSN 1052-8091. Retrieved 11 January 2017.
  7. ^ a b 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 11 January 2017.
  8. ^ a b Carry, B.; Solano, E.; Eggl, S.; DeMeo, F. E. (April 2016). "Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry". Icarus. 268: 340–354. arXiv:1601.02087. Bibcode:2016Icar..268..340C. doi:10.1016/j.icarus.2015.12.047. Retrieved 11 January 2017.
[edit]
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