207 Hedda: Difference between revisions

207 Hedda
	Orbital diagram
Discovery
Discovered by	Johann Palisa
Discovery date	17 October 1879
Designations
MPC designation	(207) Hedda
Pronunciation	German: [ˈhɛdaː]
Named after	Hedwig Winnecke
Alternative designations	A879 UA, 1932 CL1; 1934 XJ, 1953 BF
Minor planet category	Main belt
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	133.61 yr (48801 d)
Aphelion	2.3497 AU (351.51 Gm)
Perihelion	2.2177 AU (331.76 Gm)
Semi-major axis	2.2837 AU (341.64 Gm)
Eccentricity	0.028894
Orbital period (sidereal)	3.45 yr (1260.5 d)
Average orbital speed	19.71 km/s
Mean anomaly	34.9926°
Mean motion	0° 17m 8.124s / day
Inclination	3.8036°
Longitude of ascending node	29.212°
Time of perihelion	2023-Feb-21
Argument of perihelion	192.936°
Physical characteristics
Dimensions	58.70±1.3 km
Synodic rotation period	30.098 h (1.2541 d); 19.489 h
Geometric albedo	0.0552±0.003
Spectral type	C
Absolute magnitude (H)	9.92

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207 Hedda is a sizeable Main belt asteroid. It is a C-type asteroid, meaning it is primitive in composition and dark in colour. This asteroid was discovered by Johann Palisa on October 17, 1879, in Pola and was named after Hedwig Winnecke (née Dell), wife of astronomer Friedrich A. T. Winnecke.^[3]

Attempts to determine the rotation period for this asteroid have led to conflicting results. A study published in 2010 using photometric observations from Organ Mesa Observatory showed a rotation period of 19.489 ± 0.002 hours and a brightness variation of 0.18 ± 0.02 in magnitude.^[2]

References

^ ^a ^b "207 Hedda". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
^ ^a ^b Pilcher, Frederick (January 2010), "Rotational Period Determination for 23 Thalia, 204 Kallisto and 207 Hedda, and Notes on 161 Athor and 215 Oenone", The Minor Planet Bulletin, 37 (1): 21–23, Bibcode:2010MPBu...37...21P.
^ Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.

External links

The Asteroid Orbital Elements Database
Asteroid Albedo Compilation
207 Hedda at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
207 Hedda at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

[jpldata-1] "207 Hedda". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.

[mpb37_1_21-2] Pilcher, Frederick (January 2010), "Rotational Period Determination for 23 Thalia, 204 Kallisto and 207 Hedda, and Notes on 161 Athor and 215 Oenone", The Minor Planet Bulletin, 37 (1): 21–23, Bibcode:2010MPBu...37...21P.

[3] Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.

[1]

[2]

[3]

@@ Line 1: / Line 1: @@
+{{Short description|Main-belt asteroid}}
-<!-- Additional parameters for this template  are available at [[Template:Infobox Planet]]. -->{{Infobox planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0 | name=207 Hedda
+{{Use dmy dates|date=October 2019}}
+{{Infobox planet
+ | minorplanet=yes
+ | background=#D6D6D6
+ | name=207 Hedda
  | discoverer=[[Johann Palisa]]
+   |image= Орбита астероида 207.png
- | discovered=October 17, 1879
+|caption=Orbital diagram
- | alt_names=1932 CL<sub>1</sub>, 1934 XJ,<br>1953 BF
+| discovered=17 October 1879
+ | mpc_name=(207) Hedda
+ | pronounced={{IPA|de|ˈhɛdaː|lang}}
+ | alt_names=A879 UA, {{mp|1932 CL|1}}<br/>1934 XJ, 1953 BF
  | mp_category=[[Asteroid belt|Main belt]]
- | epoch=30 January 2005 ([[Julian day|JD]] 2453400.5)
+ | epoch=31 July 2016 ([[Julian day|JD]] 2457600.5)
- | semimajor=341.655 [[Giga|G]]m (2.284 [[Astronomical unit|AU]])
+ | semimajor={{Convert|2.2837|AU|Gm|abbr=on}}
- | perihelion=331.773 Gm (2.218 AU)
+ | perihelion={{Convert|2.2177|AU|Gm|abbr=on}}
+ | time_periastron=2023-Feb-21
- | aphelion=351.538 Gm (2.35 AU)
+ | aphelion={{Convert|2.3497|AU|Gm|abbr=on|lk=on}}
- | eccentricity=0.029
+ | eccentricity=0.028894
- | period=1260.619 [[day|d]] (3.45 [[Julian year (astronomy)|a]])
+ | period=3.45 [[Julian year (astronomy)|yr]] (1260.5 [[Julian year (astronomy)|d]])
- | inclination=3.804[[degree (angle)|°]]
- | asc_node=29.292°
+ | inclination=3.8036°
- | arg_peri=193.504°
+ | asc_node=29.212°
- | mean_anomaly=275.242°
+ | arg_peri=192.936°
- | avg_speed=19.71 km/[[second|s]]
+ | mean_anomaly=34.9926[[Degree (angle)|°]]
- | dimensions=59.0 km
+ | avg_speed=19.71 km/s
+ | dimensions={{val|58.70|1.3|ul=km}}
- | mass=''unknown''
+ | mass=
- | density=''unknown''
+ | density=
- | surface_grav=''unknown''
+ | rotation={{Convert|30.098|h|d|abbr=on|lk=on}}<ref name="jpldata"/><br />19.489 h<ref name="mpb37_1_21"/>
- | escape_velocity=''unknown''
- | rotation=''unknown''
  | spectral_type=[[C-type asteroid|C]]
  | abs_magnitude=9.92
- | albedo=0.055
+ | albedo={{val|0.0552|0.003}}
- | single_temperature=''unknown''}}
+ | single_temperature=
+ | mean_motion={{Deg2DMS|0.28559|sup=ms}} / day
+ |named_after=Hedwig Winnecke
+ | orbit_ref=<ref name="jpldata">{{Cite web |url=https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=207 |title=207 Hedda |work=[[JPL Small-Body Database]] |publisher=[[NASA]]/[[Jet Propulsion Laboratory]] |access-date=12 May 2016}}</ref>
+ | observation_arc=133.61 yr (48801 d)
+ | uncertainty=0
+}}
-'''207 Hedda''' is a sizeable [[Asteroid belt|Main belt]] [[asteroid]]. It is a [[C-type asteroid]], meaning it is primitive in composition and dark in colour.
+'''207 Hedda''' is a sizeable [[Asteroid belt|Main belt]] [[asteroid]]. It is a [[C-type asteroid]], meaning it is primitive in composition and dark in colour. This asteroid was discovered by [[Johann Palisa]] on October 17, 1879, in [[Pula|Pola]] and was named after Hedwig Winnecke (née Dell), wife of astronomer [[Friedrich A. T. Winnecke]].<ref>Schmadel, L. (2003:31). ''Dictionary of minor planet names''. Germany: Springer.</ref>
+Attempts to determine the rotation period for this asteroid have led to conflicting results. A study published in 2010 using [[Photometry (astronomy)|photometric]] observations from Organ Mesa Observatory showed a [[rotation period]] of 19.489 ± 0.002 hours and a brightness variation of 0.18 ± 0.02 in [[Magnitude (astronomy)|magnitude]].<ref name="mpb37_1_21"/>
-It was discovered by [[Johann Palisa]] on October 17, 1879 in [[Pula|Pola]] and was named after Hedwig, wife of astronomer [[Friedrich A. T. Winnecke]].
 == References ==
+{{reflist|refs=
-*[ftp://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
-*[http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
-*[http://www.psi.edu/pds/archive/albedo.html Asteroid Albedo Compilation]
+<ref name="mpb37_1_21">{{citation
-{{Minor planets navigator|206 Hersilia|208 Lacrimosa}}
+ | last1=Pilcher | first1=Frederick
+ | title=Rotational Period Determination for 23 Thalia, 204 Kallisto and 207 Hedda, and Notes on 161 Athor and 215 Oenone
+ | journal=The Minor Planet Bulletin
+ | volume=37 | issue=1 | pages=21–23 | date=January 2010
+ | bibcode=2010MPBu...37...21P
+ | postscript=.
+}}</ref>
+}}
+==External links==
+* [http://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
+* [https://web.archive.org/web/20041205000314/http://www.psi.edu/pds/archive/albedo.html Asteroid Albedo Compilation]
+* {{AstDys|207}}
+* {{JPL small body}}
+{{Minor planets navigator |206 Hersilia |number=207 |208 Lacrimosa}}
 {{Small Solar System bodies}}
+{{Authority control}}
-{{DEFAULTSORT:Hedda}}
+{{DEFAULTSORT:000207}}
-[[Category:Main Belt asteroids]]
+[[Category:Background asteroids]]
-[[Category:C-type asteroids]]
+[[Category:Discoveries by Johann Palisa|Hedda]]
-[[Category:Asteroids named for people]]
+[[Category:Named minor planets|Hedda]]
-[[Category:Astronomical objects discovered in 1879]]
+[[Category:C-type asteroids (Tholen)]]
-[[Category:Discoveries by Johann Palisa]]
+[[Category:Ch-type asteroids (SMASS)]]
+[[Category:Astronomical objects discovered in 1879|18791017]]
-[[ast:207 Hedda]]
-[[de:(207) Hedda]]
-[[el:207 Χέντα]]
-[[es:(207) Hedda]]
-[[eu:207 Hedda]]
-[[fa:سیارک ۲۰۷]]
-[[fr:(207) Hedda]]
-[[hr:207 Hedda]]
-[[it:207 Hedda]]
-[[la:207 Hedda]]
-[[hu:207 Hedda]]
-[[ja:ヘッダ (小惑星)]]
-[[no:207 Hedda]]
-[[nn:207 Hedda]]
-[[pl:207 Hedda]]
-[[pt:207 Hedda]]
-[[sk:207 Hedda]]
-[[sl:207 Heda]]
-[[sr:207 Hedda]]
-[[th:207 Hedda]]
-[[vi:207 Hedda]]
-[[zh:小行星207]]
 {{C-beltasteroid-stub}}