Semper simplicissimam, fundamentalem solutionem quaere. Si simpliciter explicare non potes, non intellexisti. (R. Feynman)
Astrophotography by GrandpaJunkrat - ----- WDS 21430+6606
Cosmology from my armchair..............................
I do it metric .............................................................. Location:
bastion@protonmail.com The Netherlands
Bortle 7 - 9
A - WDS 21430+6606 - EM LkHα 234 (primaire)
Given that only one of the eleven listed companions has a Gaia counterpart with highly uncertain astrometry, and the remaining ten are undetected in Gaia and often based on single K‑band measurements in a nebulous YSO field, WDS 21430+6606 cannot be considered a well‑established physical multiple system.
Comp Gaia DR3 source_id G‑mag π (mas) ± σ pmRA ± σ pmDec ± σ Physical?
A 2218012031823081856 12.36 1.140 ± 0.020 −1.680 ± 0.024 −3.443 ± 0.023 Primaire RA: 325.7784058 Dec: +66.1150409
B 2218102027526021248 19.62 1.440 ± 0.287 −1.526 ± 0.360 −3.429 ± 0.287 Inconclusive RA: 325.7795137 Dec: +66.1171383
C 2218102130182380675 16.83 1.265 ± 0.156 −1.504 ± 0.123 −3.816 ± 0.119 Marginal RA: 325.7707373 Dec: +66.1147356
Label Gaia DR3 source_id RA (°) Dec (°) G‑mag ρ t.o.v. A (″) θ t.o.v. A (°) Opmerking
A 2218012031823081856 325.7784058 +66.1150409 12.36 0.0 — Primaire
B 2218102027526021248 325.7795137 +66.1171383 19.62 8.4″ 28° Geen WDS‑match
C 2218102130182380675 325.7707373 +66.1147356 16.83 16.3″ 266° Komt overeen met WDS‑component AE
WDS comp ρ (″) θ (°) Gaia‑match Gaia‑bron Status
A 0 — yes A Primaire
AB 2.5 330 Nee — No Gaia data; suspect
AC 3.0 296 Nee — No Gaia data; suspect
AD 6–8 11–15 Nee — No Gaia data; suspect
AE 7.5–11- 265–270 Ja C Indeterminate (large errors)
AF 10–12.5-175–180 Nee — No Gaia data; suspect
AG 6.5–7.2-123–124 Nee — No Gaia data; suspect
AH 10–10.7 205 Nee — No Gaia data; suspect
AI 6.4–6.5 204–205 Nee — No Gaia data; suspect
AJ 1.9 97 Nee — No Gaia data; suspect
AK 2.3 276 Nee — No Gaia data; suspect
AL 3.7 306 Nee — No Gaia data; suspect
