Tianfu - Revision history

IanRidpath: Capitalization, copyedit

2026-02-22T18:24:29Z

Capitalization, copyedit

← Older revision		Revision as of 18:24, 22 February 2026
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	==Etymology and History==		==Etymology and History==
	Tianfu contains four stars and literally translates to "Celestial Drumstick." This asterism belongs to the Wu Xian school and is depicted in yellow on ancient Chinese celestial globes and maps. The origin of this asterism postdates the one referred to as "Hegu (河鼓, Drum at the ~~River）~~" by the Shi school because, by its literal meaning, Tianfu is used to strike the drum. Since the Hegu was primarily associated with military war drums in astrology, Tianfu is also considered related to the military. Additionally, drums were essential timekeeping tools in ancient China, so Tianfu is endowed with significant attributes related to timekeeping. According to the ancient Chinese astrologers, if the stars of Tianfu dim, it could lead to inaccuracies in timekeeping.		Tianfu contains four stars and literally translates to "Celestial Drumstick." This asterism belongs to the Wu Xian school and is depicted in yellow on ancient Chinese celestial globes and maps. The origin of this asterism postdates the one referred to as "Hegu (河鼓, Drum at the River)" by the Shi school because, by its literal meaning, Tianfu is used to strike the drum. Since the Hegu was primarily associated with military war drums in astrology, Tianfu is also considered related to the military. Additionally, drums were essential timekeeping tools in ancient China, so Tianfu is endowed with significant attributes related to timekeeping. According to the ancient Chinese astrologers, if the stars of Tianfu dim, it could lead to inaccuracies in timekeeping.

	According to descriptions from the Wu Xian and Huangdi schools, Tianfu is located to the left of the three stars of the Hegu<ref>Qutan Xida. Kaiyuanzhanjing 开元占经. Jiuzhou Press, P. 705.</ref>. Ancient star maps before the Tang Dynasty correspond to this description, but the position of this asterism shifted downwards after the Song Dynasty.		According to descriptions from the Wu Xian and Huangdi schools, Tianfu is located to the left of the three stars of the Hegu<ref>Qutan Xida. Kaiyuanzhanjing 开元占经. Jiuzhou Press, P. 705.</ref>. Ancient star maps before the Tang Dynasty correspond to this description, but the position of this asterism shifted downwards after the Song Dynasty.
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	\|-		\|-
	\| 1st/4th		\| 1st/4th
	\|~~eta~~ Aql		\|Eta Aql
	\|~~eta~~ Aql		\|Eta Aql
	\| ~~eta~~/58 Aql		\| Eta/58 Aql
	\|~~eta~~ Aql		\|Eta Aql
	\|~~eta~~ Aql		\|Eta Aql
	\|~~phi~~ Aql		\|Phi Aql
	\|69 Aql		\|69 Aql
	\|-		\|-
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	\|62 Aql		\|62 Aql
	\|62 Aql		\|62 Aql
	\|~~tet~~ Aql		\|Theta Aql
	\|62 Aql		\|62 Aql
	\|62 Aql		\|62 Aql
	\|~~tau~~ Aql		\|Tau Aql
	\|~~tet~~ Aql		\|Theta Aql
	\|-		\|-
	\|4th/1st		\|4th/1st
	\|~~tet~~ Aql		\|Theta Aql
	\|~~tet~~ Aql		\|Theta Aql
	\|HIP 100232		\|HIP 100232
	\|~~tet~~ Aql		\|Theta Aql
	\|~~tet~~ Aql		\|Theta Aql
	\|Hip 100541		\|Hip 100541
	\|62 Aql		\|62 Aql
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	Hence, τ Aql (65 Aql, HD 191692, HR 7710, HIP 99473) was suggested to be named "Tianfu".		Hence, τ Aql (65 Aql, HD 191692, HR 7710, HIP 99473) was suggested to be named "Tianfu".

	τ Aql is a multiple system (WDS J20113-0049) with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog -- a spectroscopic binary that has been resolved with interferometers in recent decades. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of Vmag(Aa)=3.48 and Vmag(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.		τ Aql is a multiple system (WDS J20113-0049) with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog – a spectroscopic binary that has been resolved with interferometers in recent decades. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of Vmag(Aa)=3.48 and Vmag(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.

	==IAU Working Group on Star Names==		==IAU Working Group on Star Names==

Sushoff at 06:17, 17 January 2026

2026-01-17T06:17:10Z

← Older revision		Revision as of 06:17, 17 January 2026
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	{{DISPLAYTITLE:Tianfu (天桴)}}		{{DISPLAYTITLE:Tianfu (天桴)}}
			Authors: {{PAGEAUTHORS}}
			----
	[[File:天桴2-1.jpg\|thumb\|Tianfu on the ''Gezi Yuejin Tu'' (Tang dynasty)]]		[[File:天桴2-1.jpg\|thumb\|Tianfu on the ''Gezi Yuejin Tu'' (Tang dynasty)]]
	Chinese constellation.		Chinese constellation.

Sushoff at 17:49, 20 May 2025

2025-05-20T17:49:03Z

← Older revision		Revision as of 17:49, 20 May 2025
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	τ Aql is a multiple system (WDS J20113-0049) with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog -- a spectroscopic binary that has been resolved with interferometers in recent decades. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of Vmag(Aa)=3.48 and Vmag(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.		τ Aql is a multiple system (WDS J20113-0049) with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog -- a spectroscopic binary that has been resolved with interferometers in recent decades. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of Vmag(Aa)=3.48 and Vmag(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.

	==~~Weblink~~==		==IAU Working Group on Star Names==
			The star name was adopted by the IAU WGSN on 2024/05/16.

			==Weblinks==
			* Website of the IAU WGSN: https://exopla.net/
	* Ian Ridpath [http://www.ianridpath.com/startales/aquila.html#chinese Aquila – Chinese associations] Star Tales – Online edition		* Ian Ridpath [http://www.ianridpath.com/startales/aquila.html#chinese Aquila – Chinese associations] Star Tales – Online edition

	==~~References~~==		==Reference==
	[[References (Chinese)]]		*[[References\|References (general)]]
			*[[References (Chinese)]]


	[[Category:Asterism ]]		[[Category:Asterism ]]
	[[Category:Constellation ]]		[[Category:Constellation ]]

Sushoff at 14:57, 25 December 2024

2024-12-25T14:57:40Z

← Older revision		Revision as of 14:57, 25 December 2024
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	[[Category:Chinese ]]		[[Category:Chinese ]]
	[[Category:IAU-Star Name]]		[[Category:IAU-Star Name]]
			[[Category:Aql]]
	<references />		<references />

Ericmamajek: /* Star Name Discussion (IAU) */

2024-12-15T07:17:25Z

Star Name Discussion (IAU)

← Older revision		Revision as of 07:17, 15 December 2024
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	==Star Name Discussion (IAU)==		==Star Name Discussion (IAU)==
	In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain. ~~Hence, τ Aql is suggested to be named "Tianfu".~~		In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain.

	τ Aql is a multiple system with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog in spectroscopic binary that has been resolved with interferometers. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of V(Aa)=3.48 and V(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.		Hence, τ Aql (65 Aql, HD 191692, HR 7710, HIP 99473) was suggested to be named "Tianfu".

			τ Aql is a multiple system (WDS J20113-0049) with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog -- a spectroscopic binary that has been resolved with interferometers in recent decades. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of Vmag(Aa)=3.48 and Vmag(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.

	==Weblink==		==Weblink==

Ericmamajek: binarity discussion

2024-12-15T07:14:18Z

binarity discussion

← Older revision		Revision as of 07:14, 15 December 2024
Line 73:		Line 73:
	==Star Name Discussion (IAU)==		==Star Name Discussion (IAU)==
	In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain. Hence, τ Aql is suggested to be named "Tianfu".		In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain. Hence, τ Aql is suggested to be named "Tianfu".

			τ Aql is a multiple system with the components labelled Aa and Ab in the Washington Double Star (WDS) Catalog in spectroscopic binary that has been resolved with interferometers. The components Aa and Ab appear to be essentially identical B9 giants (Pourbaix et al. 2004; SB9 catalog), with a V-band magnitude difference of 1.53 mags (Hummel et al. 1995). For an unresolved apparent V magnitude of 3.84 (Hipparcos catalog; ESA 1997), this magnitude difference implies V magnitudes of V(Aa)=3.48 and V(Ab)=5.01. The WGSN-adopted name "Tianfu" applies to the primary Aa.

	==Weblink==		==Weblink==

Sushoff at 09:52, 14 December 2024

2024-12-14T09:52:32Z

← Older revision		Revision as of 09:52, 14 December 2024
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	[[Category:East Asian]]		[[Category:East Asian]]
	[[Category:Chinese ]]		[[Category:Chinese ]]
	~~[[Category:Star Name]]~~
	[[Category:IAU-Star Name]]		[[Category:IAU-Star Name]]

	<references />		<references />

Sushoff at 02:11, 27 October 2024

2024-10-27T02:11:43Z

← Older revision		Revision as of 02:11, 27 October 2024
Line 85:		Line 85:
	[[Category:Chinese ]]		[[Category:Chinese ]]
	[[Category:Star Name]]		[[Category:Star Name]]
			[[Category:IAU-Star Name]]

	<references />		<references />

IanRidpath: Added web link

2024-09-25T11:46:53Z

Added web link

← Older revision		Revision as of 11:46, 25 September 2024
Line 73:		Line 73:
	==Star Name Discussion (IAU)==		==Star Name Discussion (IAU)==
	In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain. Hence, τ Aql is suggested to be named "Tianfu".		In 2024, the name of the historical constellation "Tianfu" was suggested to be used for one of the stars in this constellation. The identifications of the four stars vary over time. The bright stars η and θ had been identified by scholars in the 20th century but are now considered uncertain (possibly incorrect) suggestions. Although the new identification makes the early version of the constellation Tianfu consisting of only faint stars(>5), this identification is preferred about the astrological significance of the asterism in this historical time: the "celestial drum stick" placed close to the asterism of the "drum". With the new identifications (before and after the Tang Dynasty), the stars ϕ and τ are the brightest ones in the asterism. Although ϕ Aql is a bit brighter, whether it formed part of the asterism in earlier epochs is uncertain. Hence, τ Aql is suggested to be named "Tianfu".

			==Weblink==
			* Ian Ridpath [http://www.ianridpath.com/startales/aquila.html#chinese Aquila – Chinese associations] Star Tales – Online edition

	==References==		==References==

Sushoff at 17:28, 19 September 2024

2024-09-19T17:28:14Z

← Older revision		Revision as of 17:28, 19 September 2024
Line 81:		Line 81:
	[[Category:East Asian]]		[[Category:East Asian]]
	[[Category:Chinese ]]		[[Category:Chinese ]]
			[[Category:Star Name]]

	<references />		<references />