762 Pulcova: Difference between revisions

762 Pulcova
	762 Pulcova and satellite as seen with adaptive optics in 2000
Discovery
Discovered by	G. N. Neujmin
Discovery date	3 September 1913
Designations
MPC designation	(762) Pulcova
Pronunciation	/ˈpʊlkəvə/
Named after	Pulkovo Heights
Alternative designations	1913 SQ
Minor planet category	Main belt
Adjectives	Pulcovian /pʊlˈkoʊviən/
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	100.08 yr (36553 d)
Aphelion	3.4801 AU (520.62 Gm) (Q)
Perihelion	2.8291 AU (423.23 Gm) (q)
Semi-major axis	3.1546 AU (471.92 Gm) (a)
Eccentricity	0.10319 (e)
Orbital period (sidereal)	5.60 yr (2046.5 d)
Mean anomaly	348.62° (M)
Mean motion	0° 10m 33.276s / day (n)
Inclination	13.089° (i)
Longitude of ascending node	305.76° (Ω)
Argument of perihelion	189.54° (ω)
Known satellites	S/2000 (762) 1
Earth MOID	1.84297 AU (275.704 Gm)
Jupiter MOID	1.60162 AU (239.599 Gm)
TJupiter	3.158
Physical characteristics
Mean radius	68.54±1.6 km
Mass	1.40×1018 kg
Mean density	0.90 g/cm3
Synodic rotation period	5.839 h (0.2433 d)
Sidereal rotation period	5.839 hr
Geometric albedo	0.0458±0.002
Apparent magnitude	11.93 to 14.79
Absolute magnitude (H)	8.28

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762 Pulcova is a main-belt asteroid. It was discovered by Grigoriy N. Neujmin in 1913,^[2] and is named after Pulkovo Observatory, near Saint Petersburg. Pulcova is 137 km in diameter,^[2] and is a C-type asteroid, which means that it is dark in colouring with a carbonate composition.

Photometric observations of this asteroid from Leura, Australia during 2006 gave a light curve with a period of 5.8403 ± 0.0005 hours and a brightness variation of 0.20 ± 0.02 in magnitude. This result is in agreement with previous studies.^[6]

Satellite

On February 22, 2000,^[1] astronomers at the Canada-France-Hawaii Telescope on Mauna Kea, Hawaii, discovered a 15-km moon (roughly a tenth the size of the primary)^[7] orbiting Pulcova at a distance of 800 km.^[8] Its orbital period is 4 days.^[9] The satellite is about 4 magnitudes fainter than the primary.^[8] It was one of the first asteroid moons to be identified.

Density

In the year 2000, Merline estimated Pulcova to have a density of 1.8 g/cm³, which would make it more dense than the trinary asteroid 45 Eugenia, and binary 90 Antiope.^[8] But estimates by Marchis in 2008 suggest a density of only 0.90 g/cm³,^[4] suggesting it may be a loosely packed rubble pile, not a monolithic object.

References

^ ^a ^b ^c "762 Pulcova". SwRI. 22 February 2000. Retrieved 20 October 2009. (AO image)
^ ^a ^b ^c ^d ^e ^f ^g "JPL Small-Body Database Browser: 762 Pulcova (1913 SQ)" (2009-09-22 last obs). Retrieved 5 May 2016.
^ Catalogue of the Mathematical, Historical, Bibliographical and Miscellaneous Portion of the Celebrated Library of M. Guglielmo Libri, 1861, p. 216
^ ^a ^b ^c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 28 November 2008.
^ Magnitudes generated with JPL Horizons for the year 1950 through 2100
^ Oey, Julian (December 2006), "Lightcurves analysis of 10 asteroids from Leura Observatory", The Minor Planet Bulletin, 33 (4): 96–99, Bibcode:2006MPBu...33...96O.
^ Dr. William J. Merline & Maria Martinez (26 October 2000). "Astronomers Image Double Asteroid". SwRI Press Release. Retrieved 20 October 2009. (mentions both 90 Antiope and 762 Pulcova)
^ ^a ^b ^c W.J. Merline (SwRI); L.M. Close (ESO, U. Arizona); C. Dumas (JPL); J.C. Shelton (Mt. Wilson Obs.); F. Menard (CFHT); C.R. Chapman; et al. (21 June 2000). "Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging" (PDF). SwRI. Retrieved 21 October 2009.
^ Johnston, Robert (1 September 2005). "(762) Pulcova". Johnston's Archive. Retrieved 1 November 2013.

External links

Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
762 Pulcova at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
762 Pulcova at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[CFHT2000-1] "762 Pulcova". SwRI. 22 February 2000. Retrieved 20 October 2009. (AO image)

[jpldata-2] ^ ^a ^b ^c ^d ^e ^f ^g "JPL Small-Body Database Browser: 762 Pulcova (1913 SQ)" (2009-09-22 last obs). Retrieved 5 May 2016.

[3] Catalogue of the Mathematical, Historical, Bibliographical and Miscellaneous Portion of the Celebrated Library of M. Guglielmo Libri, 1861, p. 216

[Baer-4] Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 28 November 2008.

[5] Magnitudes generated with JPL Horizons for the year 1950 through 2100

[Oey2006-6] Oey, Julian (December 2006), "Lightcurves analysis of 10 asteroids from Leura Observatory", The Minor Planet Bulletin, 33 (4): 96–99, Bibcode:2006MPBu...33...96O.

[swri2000-7] Dr. William J. Merline & Maria Martinez (26 October 2000). "Astronomers Image Double Asteroid". SwRI Press Release. Retrieved 20 October 2009. (mentions both 90 Antiope and 762 Pulcova)

[Merline2000-8] W.J. Merline (SwRI); L.M. Close (ESO, U. Arizona); C. Dumas (JPL); J.C. Shelton (Mt. Wilson Obs.); F. Menard (CFHT); C.R. Chapman; et al. (21 June 2000). "Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging" (PDF). SwRI. Retrieved 21 October 2009.

[Johnston-9] Johnston, Robert (1 September 2005). "(762) Pulcova". Johnston's Archive. Retrieved 1 November 2013.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

@@ Line 1: / Line 1: @@
+{{Short description|Main-belt asteroid}}
+{{Use dmy dates|date=October 2019}}
 {{Infobox planet
 | minorplanet = yes
-| background = #FFFFC0
+| background = #D6D6D6
 | name = 762 Pulcova
+| image = 762Pulcova-SwRI.gif
-| symbol =
+| image_scale =
-| image = [[File:762Pulcova-SwRI.gif|240px]]
 | caption = 762 Pulcova and satellite as seen with [[adaptive optics]] in 2000<ref name=CFHT2000/>
 | discovery_ref = <ref name=jpldata/>
@@ Line 10: / Line 12: @@
 | discovered = 3 September 1913
 | mpc_name = (762) Pulcova
+| pronounced = {{IPAc-en|'|p|ʊ|l|k|ə|v|ə}}<!--stress per Пу́лковские-->
+| adjective = Pulcovian {{IPAc-en|p|ʊ|l|'|k|oʊ|v|i|ə|n}}<ref>''Catalogue of the Mathematical, Historical, Bibliographical and Miscellaneous Portion of the Celebrated Library of M. Guglielmo Libri'', 1861, p. 216</ref>
+| named_after = [[Pulkovo Heights]]
 | alt_names = 1913 SQ
 | mp_category = [[Main belt]]
@@ Line 51: / Line 56: @@
   |type=2009-09-22 last obs
   |title=JPL Small-Body Database Browser: 762 Pulcova (1913 SQ)
-  |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=762
+  |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=762
-  |accessdate=5 May 2016}}</ref> and is a [[C-type asteroid]], which means that it is dark in colouring with a [[carbonate]] composition.
+  |access-date=5 May 2016}}</ref> and is a [[C-type asteroid]], which means that it is dark in colouring with a [[carbonate]] composition.
 [[Photometry (astronomy)|Photometric]] observations of this asteroid from [[Leura, New South Wales|Leura]], Australia during 2006 gave a [[light curve]] with a period of 5.8403 ± 0.0005 hours and a brightness variation of 0.20 ± 0.02 in [[Magnitude (astronomy)|magnitude]]. This result is in agreement with previous studies.<ref name="Oey2006"/>
 == Satellite ==
+[[File:762 Pulcova Hubble.jpg|thumb|left|Pulcova and its satellite imaged by the [[Hubble Space Telescope]] in January 2005]]
+[[File:762 Pulkova orbit.png|thumb|left|Diagram of 762 Pulcova's orbit]]
 On February 22, 2000,<ref name=CFHT2000>{{cite web
   |date=2000-02-22
@@ Line 62: / Line 69: @@
   |publisher=SwRI
   |url=http://www.boulder.swri.edu/merline/press/fig3.html
-  |accessdate=2009-10-20}} ([[Adaptive optics|AO]] image)</ref> astronomers at the [[Canada-France-Hawaii Telescope]] on [[Mauna Kea]], Hawaii, discovered a small, 15-km moon (roughly a 10th the size of the primary)<ref name=swri2000>{{cite web
+  |access-date=2009-10-20}} ([[Adaptive optics|AO]] image)</ref> astronomers at the [[Canada-France-Hawaii Telescope]] on [[Mauna Kea]], Hawaii, discovered a 15-km moon (roughly a tenth the size of the primary)<ref name=swri2000>{{cite web
   |date=2000-10-26
   |title=Astronomers Image Double Asteroid
@@ Line 68: / Line 75: @@
   |author=Dr. William J. Merline
   |author2=Maria Martinez
-  |last-author-amp=yes
+  |name-list-style=amp
   |url=http://www.boulder.swri.edu/merline/press/release.txt
-  |accessdate=2009-10-20}} (mentions both [[90 Antiope]] and 762 Pulcova)</ref> orbiting Pulcova at a distance of 800&nbsp;km.<ref name="Merline2000"/> Its orbital period is 4 days.<ref name="Johnston">{{cite web | url=http://www.johnstonsarchive.net/astro/astmoons/am-00762.html | title=(762) Pulcova | work=Johnston's Archive | date=September 1, 2005 | accessdate=1 November 2013 | author=Johnston, Robert}}</ref> The satellite is about 4 [[apparent magnitude|magnitudes]] fainter than the primary.<ref name="Merline2000"/>  It was one of the first [[Minor-planet moon|asteroid moons]] to be identified.
+  |access-date=2009-10-20}} (mentions both [[90 Antiope]] and 762 Pulcova)</ref> orbiting Pulcova at a distance of 800&nbsp;km.<ref name="Merline2000"/> Its orbital period is 4 days.<ref name="Johnston">{{cite web | url=http://www.johnstonsarchive.net/astro/astmoons/am-00762.html | title=(762) Pulcova | work=Johnston's Archive | date=September 1, 2005 | access-date=1 November 2013 | author=Johnston, Robert}}</ref> The satellite is about 4 [[apparent magnitude|magnitudes]] fainter than the primary.<ref name="Merline2000"/>  It was one of the first [[Minor-planet moon|asteroid moons]] to be identified.
 == Density ==
-In the year 2000, Merline estimated Pulcova to have a [[density]] of 1.8 g/cm³, which would make it more dense than the trinary asteroid [[45 Eugenia]], and binary [[90 Antiope]].<ref name="Merline2000">{{cite web
+In the year 2000, Merline estimated Pulcova to have a [[density]] of 1.8 g/cm<sup>3</sup>, which would make it more dense than the trinary asteroid [[45 Eugenia]], and binary [[90 Antiope]].<ref name="Merline2000">{{cite web
   |date=2000-06-21
   |title=Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging
@@ Line 86: / Line 93: @@
   |author7=D.C. Slater (SwRI)
   |url=http://www.boulder.swri.edu/merline/press/dps.abstract.pdf
-  |accessdate=2009-10-21}}</ref> But estimates by Marchis in 2008 suggest a density of only 0.90 g/cm³,<ref name=Baer>{{cite web
+  |access-date=2009-10-21}}</ref> But estimates by Marchis in 2008 suggest a density of only 0.90 g/cm<sup>3</sup>,<ref name=Baer>
+{{cite web
   |date=2008
   |title=Recent Asteroid Mass Determinations
@@ Line 92: / Line 100: @@
   |author=Jim Baer
   |url=http://home.earthlink.net/~jimbaer1/astmass.txt
+  |access-date=2008-11-28
-  |accessdate=2008-11-28}}</ref> suggesting it may be a loosely packed rubble pile, not a monolithic object.
+  |archive-url=https://web.archive.org/web/20130702212735/http://home.earthlink.net/~jimbaer1/astmass.txt
+  |archive-date=2013-07-02
+  |url-status=dead
+  }}
+</ref> suggesting it may be a loosely packed rubble pile, not a monolithic object.
 ==References==
 {{Reflist|refs=
 <ref name="Oey2006">{{Citation
  | last1     = Oey
  | first1    = Julian
  | title     = Lightcurves analysis of 10 asteroids from Leura Observatory
- | work      = The Minor Planet Bulletin
+ | journal      = The Minor Planet Bulletin
  | volume    = 33
  | issue     = 4
@@ Line 108: / Line 122: @@
  | postscript= .
 }}</ref>
-}}
+}} <!-- end of reflist -->
 == External links ==
 * [http://www.johnstonsarchive.net/astro/asteroidmoons.html Asteroids with Satellites], Robert Johnston, johnstonsarchive.net
+* {{AstDys|762}}
 * {{JPL small body}}
-{{Minor planets navigator|761 Brendelia|number=762|763 Cupido}}
+{{Minor planets navigator |761 Brendelia |number=762 |763 Cupido}}
 {{Small Solar System bodies}}
+{{Authority control}}
 {{DEFAULTSORT:000762}}
-[[Category:Main-belt asteroids|000762]]
+[[Category:Background asteroids|000762]]
-[[Category:Numbered minor planets|000762]]
 [[Category:Discoveries by Grigory Neujmin|Pulcova]]
-[[Category:Minor planets named for places|Pulcova]]
 [[Category:Named minor planets|Pulcova]]
 [[Category:Binary asteroids|000762]]