Q841193
Sign in to saveopen cluster in the constellation Triangulum Australe
Key facts
- Right ascension
- 16 03 07.0
- Declination
- −60 ° 25 ′ 48 ″
- Distance
- 2,410 ly (739.0 pc )
- Apparent dimensions v
- 15 ′
- Estimated age
- 40 to 69 Myr
- Other designations
- Caldwell 95, Collinder 296, Melotte 139, Lacaille III.10, Dunlop 304
- Constellation
- Triangulum Australe
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Constellation
- Triangulum Australe
- Distance from Earth
- 769
- Image
- NGC 6025 tel114.png
Show 12 more facts
- catalog code
- C 1559-603
- Commons category
- NGC 6025
- discoverer or inventor
- Nicolas Louis de Lacaille
- time of discovery or invention
- 1751-00-00
- apparent magnitude
- 5.1
- right ascension
- 240.8208
- declination
- -60.4317
- radial velocity
- -7.66
- epoch
- J2000.0
- parallax
- 1.2646
- right ascension component of proper motion
- -2.884
- declination component of proper motion
- -3.022
Sources (2)
via Wikidata · CC0
~2 min read
Encyclopedic overview
NGC 6025 is an open cluster of stars in the southern constellation of Triangulum Australe, near the northern constellation border with Norma. It was discovered by Abbe Lacaille in 1751 during his expedition to the Cape of Good Hope. The cluster is in the Caldwell catalogue as entry number 95, and is located at a mean distance of 2,410 ly from the Sun. NGC 6025 can be spotted with the naked eye, but is better viewed with a set of large binoculars. It has an apparent visual magnitude of 5.1 and spans an angular size of 15′.
The Trumpler class of this cluster is II3p, indicating, "a detached cluster with but little central condensation, composed of moderately bright and faint stars numbering less than 50." The brightest cluster member is MQ Triangulum Australis, with a magnitude of 7.1. This is a blue straggler with a stellar classification of B1Ve. NGC 6025 is a moderately young cluster with an age between 40 and 69 Myr. The cluster is metal-rich compared to the Sun; more so than the Hyades cluster. Seven spectroscopic binary star systems have been identified. Only one blue straggler has been found among the members, along with two Be candidates.
Excerpted from Wikipedia’s “Q841193” article, available under the CC BY-SA 4.0 licence.