# Messier 40 (Q13886)

| Property ID | Property | Value | Value entity | Amount | Unit | Date / from | Until | Rank | Sources |
| --- | --- | --- | --- | ---: | --- | --- | --- | --- | --- |
| P59 | Constellation | Ursa Major | Q8918 |  |  |  |  | normal |  |
| P31 | Instance of | double star | Q13890 |  |  |  |  | normal | http://www.messier.seds.org/m/m040.html \| SIMBAD |
| P61 | Discovered by | Charles Messier | Q14524 |  |  |  |  | normal | http://www.messier.seds.org/m/m040.html |
| P575 | Discovered | October 24, 1764 |  |  |  |  |  | normal | http://www.messier.seds.org/xtra/history/m-cat.html |
| P528 | Catalog code | M 40 |  |  |  |  |  | normal | SIMBAD |
| P528 | Catalog code | WDS J12222+5805AB |  |  |  |  |  | normal | SIMBAD |
| P528 | Catalog code | Winnecke 4 |  |  |  |  |  | normal | SIMBAD |
| P2583 | Distance from Earth | 455 ly |  | 455 | ly |  |  | normal | http://www.messier.seds.org/m/m040.html |
| P1215 | Apparent magnitude | 8.4 |  | 8.4 |  |  |  | normal | http://www.messier.seds.org/m/m040.html |
| P361 | Part of | Orion Arm | Q33187 |  |  |  |  | normal |  |
| P6257 | Right ascension | 185.5522 degree |  | 185.552208 | degree |  |  | normal | The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog |
| P6258 | Declination | 58.0829 degree |  | 58.082944 | degree |  |  | normal | The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog |
| P6259 | Epoch | J2000.0 | Q1264450 |  |  |  |  | normal | The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog |
| P527 | Members / parts | HD 238107 | Q77922423 |  |  |  |  | normal | Washington Double Star Catalog |
| P527 | Members / parts | HD 238108 | Q77924792 |  |  |  |  | normal | Washington Double Star Catalog |
| P7584 | Age estimated by a dating method | 4.1 gigaannum |  | 4.1 | gigaannum |  |  | normal |  |
| P646 | Freebase ID | /m/03tq2w |  |  |  |  |  | normal | https://www.google.com/search?kgmid=/m/03tq2w |
| P3083 | SIMBAD ID | M 40 |  |  |  |  |  | normal | https://simbad.u-strasbg.fr/simbad/sim-id?Ident=M%2040 |

Source: https://aidb.si/e/messier-40-Q13886 — Wikidata (CC0) via AIDB