NGC 6781
| NGC 6781 | |
|---|---|
 | |
| Behaketa | |
| Distantzia Lurretik | 706 pc |
| Itxurazko magnitudea (V) | 11,8 |
| Aurkitzailea | William Herschel |
| Aurkikuntza-data | 1788ko uztailaren 30a |
| Konstelazioa | Aquila (konstelazioa) |
| Abiadura erradiala | 4,3 km/s |
| Igoera zuzena | 289,6170208 ° |
| Deklinazioa | 6,5386917 ° |
| Izendapenak | |
ikusi
| |
NGC 6781 nebulosa planetario bat da, Aquilako ekuatore-konstelazioan kokatua, 5. magnitudeko 19 Aquilae izarretik 2,5 ° ekialde-ipar-ekialdera. 1788ko uztailaren 30ean aurkitu zuen William Herschel astronomo anglo-alemaniarrak[1][2]. Nebulosa eguzkitik 1.500 argi-urtera dago[3]. 11,4ko magnitude bisuala du eta 1,9 × 1,8 minutuko arku-tamaina angeluarra.
Erreferentziak
- ↑ O'Meara, Stephen James. (2007). Steve O'Meara's Herschel 400 observing guide : how to find and explore 400 star clusters, nebulae, and galaxies discovered by William and Caroline Herschel. Cambridge University Press ISBN 978-0-521-85893-9. PMC 85829276. (kontsulta data: 2022-10-03).
- ↑ «New General Catalog Objects: NGC 6750 - 6799» cseligman.com (kontsulta data: 2022-10-03).
- ↑ (Ingelesez) Otsuka, Masaaki; Ueta, Toshiya; Hoof, Peter A. M. van; Sahai, Raghvendra; Aleman, Isabel; Zijlstra, Albert A.; Chu, You-Hua; Villaver, Eva et al.. (2017-08-18). «The Herschel Planetary Nebula Survey (HerPlaNS): A Comprehensive Dusty Photoionization Model of NGC6781» The Astrophysical Journal Supplement Series 231 (2): 22. doi:. ISSN 1538-4365. PMID 28966408. PMC PMC5619666. (kontsulta data: 2022-10-03).
Kanpo estekak
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