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{{Use dmy dates|date=October 2019}}
'''6267 Rozhen''' is an ]. For four days, between 2005 January and 2005 January, it was briefly and erroneously renamed '''6267 Smolyan'''.
{{Infobox planet
| minorplanet = yes
| name = 6267 Rozhen
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| discovered = 20 September 1987
| discoverer = ]
| discovery_site = ]
| mpc_name = (6267) Rozhen
| alt_names = {{mp|1987 SO|9}}{{·}}1971 SP<br />{{mp|1979 BR|2}}
| named_after = ]<br />{{small|(discovering&nbsp;observatory)}}<ref name="springer" />
| mp_category = ]{{·}}]&thinsp;<ref name="lcdb" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 4 September 2017 (] 2458000.5)
| uncertainty = 0
| observation_arc = 67.30 yr (24,583 days)
| aphelion = 2.3582 ]
| perihelion = 1.9663 AU
| semimajor = 2.1623 AU
| eccentricity = 0.0906
| period = 3.18 ] (1,161 days)
| mean_anomaly = 72.417]
| mean_motion = {{Deg2DMS|0.3100|sup=ms}} / day
| inclination = 2.1034°
| asc_node = 136.75°
| arg_peri = 315.64°
| dimensions = 3.02 km {{small|(calculated)}}<ref name="lcdb" />
| rotation = {{val|3.980|0.020}} ]<ref name="Chang-2015" /><br />{{val|3.9847|0.0007}} h<ref name="Waszczak-2016" />
| albedo = 0.24 {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = ]&thinsp;<ref name="lcdb" />
| abs_magnitude = {{val|14.270|0.120}} {{small|(R)}}<ref name="Chang-2015" />{{·}}14.3<ref name="jpldata" />{{·}}{{val|14.316|0.001}} {{small|(R)}}<ref name="Waszczak-2016" />{{·}}14.77<ref name="lcdb" />{{·}}{{val|14.79|0.28}}<ref name="Veres-2015" />
}}


'''6267 Rozhen''', provisional designation {{mp|1987 SO|9}}, is a stony Florian ] from the inner regions of the ], approximately 3 kilometers in diameter. In 1987, the asteroid was discovered by ] at ], Bulgaria, and was later named after the discovering observatory.
==References==
*
*


== Discovery ==
{{DEFAULTSORT:Rozhen}}
]
]


''Rozhen'' was discovered on 20 September 1987, by Belgian astronomer ] at ] near Smoljan, Bulgaria.<ref name="MPC-Rozhen" /> For four days, between 27 and 31 January 2005, the body was briefly and erroneously renamed '''6267 Smolyan'''.<ref name="errata" /> In November 1949, a ] was taken at ], extending the body's ] by 38 years prior to its official discovery observation at Rozhen.<ref name="MPC-Rozhen" />
{{Asteroid-stub}}


== Orbit and classification ==
]

]
The ] is a member of the ], one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the ] main-belt at a distance of 2.0–2.4&nbsp;] once every 3 years and 2 months (1,161 days). Its orbit has an ] of 0.09 and an ] of 2] with respect to the ].<ref name="jpldata" />
]

]
== Physical characteristics ==
]

=== Lightcurves ===

In January 2014, two rotational ]s of ''Rozhen'' were obtained from photometric observations at the ] in California, United States. They gave a ] of {{val|3.9847}} and {{val|3.980}} hours with a brightness variation of 0.14 and 0.12 ], respectively ({{small|]}}).<ref name="Chang-2015" /><ref name="Waszczak-2016" />

=== Diameter and albedo ===

The ''Collaborative Asteroid Lightcurve Link'' assumes an ] of 0.24, derived from ], the asteroid family's largest member and namesake, and calculates a diameter of 3.0 kilometers with an ] of 14.77.<ref name="lcdb" />

== Naming ==

This ] was named for the discovering ], also known as the "Bulgarian National Astronomical Observatory", that has been established at Rozhen in 1981.<ref name="springer" />

Rozhen is located near the city of ] and in proximity to the border with Greece. At 1700 meters above sea leavel, the observatory benefits from favorable instrumental and observational conditions. An exhaustive survey for the discovery of minor planets was launched at Rozhen in 1986.<ref name="springer" /> The approved naming citation was published by the ] on 20 November 2002 ({{small|] 47163}}).<ref name="MPC-Circulars-Archive" />

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

<ref name="errata">{{cite web
|title = Major News about Minor Planets
|work = hohmanntransfer.com
|date = 28 February 2005
|url = http://www.hohmanntransfer.com/mn/0502/stak4.htm
|access-date = 1 January 2016
|archive-date = 4 February 2012
|archive-url = https://web.archive.org/web/20120204072705/http://www.hohmanntransfer.com/mn/0502/stak4.htm
|url-status = dead
}}</ref>

<ref name="jpldata">{{cite web
|type = 2017-03-14 last obs.
|title = JPL Small-Body Database Browser: 6267 Rozhen (1987 SO9)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006267
|archive-url = https://web.archive.org/web/20200918042703/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006267
|url-status = dead
|archive-date = 18 September 2020
|publisher = ]
|access-date = 21 June 2017}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (6267) Rozhen
|last = Schmadel | first = Lutz D.
|publisher = ]
|page = 522
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_5763 |chapter = (6267) Rozhen }}</ref>

<ref name="MPC-Rozhen">{{cite web
|title = 6267 Rozhen (1987 SO9)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=6267
|access-date = 4 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 = 4 July 2016}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (6267) Rozhen
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=6267%7CRozhen
|access-date = 4 July 2016}}</ref>

<ref name="Chang-2015">{{cite journal
|display-authors = 6
|first1 = Chan-Kao |last1 = Chang
|first2 = Wing-Huen |last2 = Ip |author-link2= Ip Wing-huen
|first3 = Hsing-Wen |last3 = Lin
|first4 = Yu-Chi |last4 = Cheng
|first5 = Chow-Choong |last5 = Ngeow
|first6 = Ting-Chang |last6 = Yang
|first7 = Adam |last7 = Waszczak
|first8 = Shrinivas R. |last8 = Kulkarni
|first9 = David |last9 = Levitan
|first10 = Branimir |last10 = Sesar
|first11 = Russ |last11 = Laher
|first12 = Jason |last12 = Surace
|first13 = Thomas. A. |last13 = Prince
|date = August 2015
|title = Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJS..219...27C
|journal = The Astrophysical Journal Supplement Series
|volume = 219
|issue = 2
|page = 19
|bibcode = 2015ApJS..219...27C
|doi = 10.1088/0067-0049/219/2/27
|arxiv = 1506.08493
|access-date= 4 July 2016}}</ref>

<ref name="Waszczak-2016">{{cite journal
|display-authors = 6
|first1 = Adam |last1 = Waszczak
|first2 = Chan-Kao |last2 = Chang
|first3 = Eran O. |last3 = Ofek
|first4 = Russ |last4 = Laher
|first5 = Frank |last5 = Masci
|first6 = David |last6 = Levitan
|first7 = Jason |last7 = Surace
|first8 = Yu-Chi |last8 = Cheng
|first9 = Wing-Huen |last9 = Ip
|first10 = Daisuke |last10 = Kinoshita
|first11 = George |last11 = Helou
|first12 = Thomas A. |last12 = Prince
|first13 = Shrinivas |last13 = Kulkarni
|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
|arxiv = 1504.04041
|access-date= 4 July 2016}}</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= 4 July 2016}}</ref>

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

== External links ==
* {{Webarchive|url=https://web.archive.org/web/20120204072851/http://www.hohmanntransfer.com/mn/0501/stak5.htm |date=4 February 2012 }}
* , query form ( {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
* , Google books
* – Observatoire de Genève, Raoul Behrend
* – Minor Planet Center
* {{AstDys|6267}}
* {{JPL small body}}

{{Minor planets navigator |6266 Letzel |number=6267 |6268 Versailles}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:Rozhen}}
]
]
]
]

Latest revision as of 18:30, 24 December 2023

6267 Rozhen
Discovery 
Discovered byE. W. Elst
Discovery siteRozhen Obs.
Discovery date20 September 1987
Designations
MPC designation(6267) Rozhen
Named afterRozhen Observatory
(discovering observatory)
Alternative designations1987 SO9 · 1971 SP
1979 BR2
Minor planet categorymain-belt · Flora 
Orbital characteristics 
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc67.30 yr (24,583 days)
Aphelion2.3582 AU
Perihelion1.9663 AU
Semi-major axis2.1623 AU
Eccentricity0.0906
Orbital period (sidereal)3.18 yr (1,161 days)
Mean anomaly72.417°
Mean motion0° 18 36 / day
Inclination2.1034°
Longitude of ascending node136.75°
Argument of perihelion315.64°
Physical characteristics
Dimensions3.02 km (calculated)
Synodic rotation period3.980±0.020 h
3.9847±0.0007 h
Geometric albedo0.24 (assumed)
Spectral typeS 
Absolute magnitude (H)14.270±0.120 (R) · 14.3 · 14.316±0.001 (R) · 14.77 · 14.79±0.28

6267 Rozhen, provisional designation 1987 SO9, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. In 1987, the asteroid was discovered by Eric Elst at Rozhen Observatory, Bulgaria, and was later named after the discovering observatory.

Discovery

Rozhen was discovered on 20 September 1987, by Belgian astronomer Eric Elst at Rozhen Observatory near Smoljan, Bulgaria. For four days, between 27 and 31 January 2005, the body was briefly and erroneously renamed 6267 Smolyan. In November 1949, a precovery was taken at Palomar Observatory, extending the body's observation arc by 38 years prior to its official discovery observation at Rozhen.

Orbit and classification

The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 2 months (1,161 days). Its orbit has an eccentricity of 0.09 and an inclination of 2° with respect to the ecliptic.

Physical characteristics

Lightcurves

In January 2014, two rotational lightcurves of Rozhen were obtained from photometric observations at the Palomar Transient Factory in California, United States. They gave a rotation period of 3.9847 and 3.980 hours with a brightness variation of 0.14 and 0.12 magnitude, respectively (U=2/2).

Diameter and albedo

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24, derived from 8 Flora, the asteroid family's largest member and namesake, and calculates a diameter of 3.0 kilometers with an absolute magnitude of 14.77.

Naming

This minor planet was named for the discovering Rozhen Observatory, also known as the "Bulgarian National Astronomical Observatory", that has been established at Rozhen in 1981.

Rozhen is located near the city of Smoljan and in proximity to the border with Greece. At 1700 meters above sea leavel, the observatory benefits from favorable instrumental and observational conditions. An exhaustive survey for the discovery of minor planets was launched at Rozhen in 1986. The approved naming citation was published by the Minor Planet Center on 20 November 2002 (M.P.C. 47163).

References

  1. ^ "JPL Small-Body Database Browser: 6267 Rozhen (1987 SO9)" (2017-03-14 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 21 June 2017.
  2. ^ Schmadel, Lutz D. (2007). "(6267) Rozhen". Dictionary of Minor Planet Names – (6267) Rozhen. Springer Berlin Heidelberg. p. 522. doi:10.1007/978-3-540-29925-7_5763. ISBN 978-3-540-00238-3.
  3. ^ "LCDB Data for (6267) Rozhen". Asteroid Lightcurve Database (LCDB). Retrieved 4 July 2016.
  4. ^ Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 4 July 2016.
  5. ^ Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 4 July 2016.
  6. 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 4 July 2016.
  7. ^ "6267 Rozhen (1987 SO9)". Minor Planet Center. Retrieved 4 July 2016.
  8. "Major News about Minor Planets". hohmanntransfer.com. 28 February 2005. Archived from the original on 4 February 2012. Retrieved 1 January 2016.
  9. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 July 2016.

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