imported>Rebestalic: revert

2024-08-02T11:21:01Z

revert

New page

{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=September 2018}}
{{Infobox planet
| minorplanet=yes
| background=#D6D6D6
| name=147 Protogeneia
| image= 147Protogeneia (Lightcurve Inversion).png
| image_scale =
| caption=A three-dimensional model of 147 Protogeneia based on its [[light curve]]
| discovery_ref=[http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html]
| discoverer=[[Lipót Schulhof]]
| discovered=10 July 1875
| mpc_name=(147) Protogeneia
| alt_names=A875 PA
| named_after=[[Protogeneia]]
| pronounced={{IPAc-en|,|p|r|ɒ|t|oʊ|dʒ|ᵻ|ˈ|n|iː|ə}}<ref>'Protogenea' in Noah Webster (1884) ''A Practical Dictionary of the English Language''</ref>
| mp_category=[[Main belt]]
| orbit_ref=<ref name="lowell">{{Cite web |url=http://ftp.lowell.edu/pub/elgb/astorb.html |website=astorb |title=The Asteroid Orbital Elements Database |publisher=[[Lowell Observatory]] }}</ref><ref name=jpldata />
| epoch=31 July 2016 ([[Julian day|JD]] 2457600.5)
| semimajor={{Convert|3.13512|AU|Gm|abbr=on}}
| perihelion={{Convert|3.04727|AU|Gm|abbr=on}}
| aphelion={{Convert|3.2230|AU|Gm|abbr=on|lk=on}}
| eccentricity=0.028020
| period=5.55 [[Julian year (astronomy)|yr]] (2027.6 [[Julian year (astronomy)|d]])
| inclination=1.9309°
| asc_node=248.357°
| arg_peri=100.692°
| mean_anomaly=92.9051[[Degree (angle)|°]]
| avg_speed=16.82 km/s
| dimensions=
| mean_radius={{val|66.465|2.55}} [[Kilometre|km]]<ref name=jpldata/> 59.22 ± 5.225 km<ref name="Carry2012"/>
| mass={{nowrap|(1.23 ± 0.05) × 1019 kg<ref name="Carry2012"/>}}
| density=14.13 ± 3.78 g/cm3<ref name="Carry2012"/>
| surface_grav=0.0371 m/s²
| escape_velocity=0.0703 km/s
| sidereal_day=
| axial_tilt=
| pole_ecliptic_lat=
| pole_ecliptic_lon=
| spectral_type=[[C-type asteroid|C]]
| rotation={{Convert|7.8528|h|d|abbr=on|lk=on}}<ref name=jpldata/><ref name="Buchheim2005"/>
| magnitude=12.4 to 14.5
| abs_magnitude=8.27<ref name="Buchheim2005"/> 8.8<ref name=jpldata/>
| albedo={{val|0.0492|0.004}}<ref name=jpldata/>
| single_temperature=~157 [[kelvin|K]]
| mean_motion={{Deg2DMS|0.177551|sup=ms}} / day
| observation_arc=132.02 yr (48222 d)
| uncertainty=0
| moid={{Convert|2.03996|AU|Gm|abbr=on}}
| jupiter_moid={{Convert|1.90385|AU|Gm|abbr=on}}
| tisserand=3.211
}}

'''147 Protogenia''' is a large [[Asteroid belt|main belt]] [[asteroid]] that was discovered by Hungarian astronomer [[Lipót Schulhof]] on July 10, 1875, from the [[Vienna Observatory]]; it was his only asteroid discovery. Its name is Greek for "first born" and was chosen by [[Karl L. Littrow]] in allusion to the fact that this was the first asteroid discovered by an astronomer who was already known for work in other fields of astronomy.<ref name="Schmadel2003"/>

This object has a low [[orbital eccentricity]] and [[orbital inclination|inclination]]. With an orbital period roughly double that of the planet [[Jupiter]], it has been identified as a member of the Hecuba group of asteroids that share a 2:1 mean-motion [[orbital resonance]] with the giant planet.<ref name="Levy1939"/> Based upon its spectrum, it has a [[Tholen classification]] as a [[C-type asteroid]],<ref name="BelSkaya1991"/> which indicates that it has a dark surface and probably a primitive composition of [[carbon]]aceous material.

[[Photometry (astronomy)|Photometric]] observations of this asteroid at the Altimira Observatory in 2004 gave a [[light curve]] with a period of 7.8528 ± 0.0008 hours and a brightness variation of 0.28 in [[Magnitude (astronomy)|magnitude]].<ref name="Buchheim2005"/> A photometric study was reported in 2006 from the [[Yunnan Observatory]] in China, finding a matching period of 7.852 hours and a brightness variation of 0.25 magnitude. They estimate the ratio of the lengths for the asteroid's major and minor axes is at least 1.26:1.<ref name="Zhang2006"/>

There is one reported [[star|stellar]] [[occultation]] by Protogeneia, on May 28, 2002, from [[Texas]].{{citation needed|date=December 2010}}

==References==
{{Reflist|refs=
<ref name=jpldata>{{Citation
| first1 = Donald K.
| last1 = Yeomans
| title = 147 Protogeneia
| work = JPL Small-Body Database Browser
| publisher = [[NASA Jet Propulsion Laboratory]]
| url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=147
| accessdate= 6 May 2016
| postscript= .
}}</ref>

<ref name="Schmadel2003">{{Citation
| first1 = Lutz D.
| last1 = Schmadel
| title = Dictionary of Minor Planet Names
| publisher = Springer
| page = 28
| edition = 5th
| date = 2003
| isbn = 3540002383
| url = https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA28
| postscript= .
}}</ref>

<ref name="Carry2012">{{Citation
| first1 = B.
| last1 = Carry
| title = Density of asteroids
| volume = 73
| issue = 1
| pages = 98–118
|date=December 2012
| doi = 10.1016/j.pss.2012.03.009
| bibcode = 2012P&SS...73...98C
| postscript= .
|arxiv = 1203.4336
| journal = Planetary and Space Science }} See Table 1.</ref>

<ref name="Buchheim2005">{{Citation
| last1 = Buchheim
| first1 = Robert K.
| title = Lightcurve of 147 Protogeneia
| volume = 32
| issue = 2
| pages = 35–36
|date=June 2005
| bibcode = 2005MPBu...32...35B
| postscript= .
| journal = The Minor Planet Bulletin
| issn = 1052-8091
}}</ref>

<ref name="BelSkaya1991">{{Citation
| last1 = Bel'Skaya
| first1 = I. N.
| last2 = Kiselev
| first2 = N. N.
| last3 = Lupishko
| first3 = D. F.
| last4 = Chernova
| first4 = G. P.
| display-authors = 1
| title = Polarimetry of CMEU asteroids. II. A peculiarity of M-type asteroids
| volume = 7
| issue = 6
| pages = 8–11
| date = 1991
| bibcode = 1991KPCB....7f...8B
| postscript= .
| journal = Kinematics and Physics of Celestial Bodies
}}</ref>

<ref name="Levy1939">{{Citation
| last1 = Levy
| first1 = Sophia H.
| title = Mean Elements and Perturbations by the Berkeley Tables of Minor Planets of the Hecuba Group
| volume = 51
| issue = 302
| page = 225
|date=August 1939
| doi = 10.1086/125066
| bibcode = 1939PASP...51..224L
| postscript= .
| journal = Publications of the Astronomical Society of the Pacific
}}</ref>

<ref name="Zhang2006">{{Citation
| last1 = Zhang
| first1 = Xi-Liang
| last2 = Wang
| first2 = Xiao-Bin
| last3 = Zhang
| first3 = Li-Yun
| s2cid = 55204167
| display-authors = 1
| title = CCD Photometry of Asteroid (147) Protogeneia
| volume = 6
| pages = 729–732
|date=December 2006
| bibcode = 2006ChJAA...6..729Z
| postscript= .
| journal = Chinese Journal of Astronomy & Astrophysics
| doi = 10.1088/1009-9271/6/6/12
| issue = 6
| doi-access= free
}}</ref>
}}

== External links ==
* {{AstDys|147}}
* {{JPL small body}}

{{Minor planets navigator |146 Lucina |number=147 |148 Gallia}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:Protogeneia}}
[[Category:Background asteroids|000147]]
[[Category:Discoveries by Lipót Schulhof]]
[[Category:Named minor planets]]
[[Category:Objects observed by stellar occultation|000147]]
[[Category:C-type asteroids (Tholen)|000147]]
[[Category:C-type asteroids (SMASS)|000147]]
[[Category:Astronomical objects discovered in 1875|18750710]]

147 Protogeneia - Revision history

imported>Rebestalic: revert