From a49acaa8f1dc35d7c217c86ce62d5260ed01d324 Mon Sep 17 00:00:00 2001
From: Andrew Tribick <ajtribick@googlemail.com>
Date: Fri, 9 Oct 2020 00:06:49 +0200
Subject: [PATCH] Update credits file

---
 output/CREDITS.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/output/CREDITS.md b/output/CREDITS.md
index 732fea9..6081d11 100644
--- a/output/CREDITS.md
+++ b/output/CREDITS.md
@@ -39,6 +39,12 @@ at https://github.com/ajtribick/celestia-gaia-stardb.
   Kharchenko (2001), Kinematika i Fizika Nebesnykh Tel 17(5), pp.409-423
   "All-sky compiled catalogue of 2.5 million stars"
 
+- HD identifications for Tycho-2 stars
+  (https://cdsarc.unistra.fr/viz-bin/cat/IV/25)
+
+  Fabricius et al. (2002), A&A 386, pp.709–710 "Henry Draper catalogue
+  identifications for Tycho-2 stars"
+
 - Teff and metallicities for Tycho-2 stars
   (http://cdsarc.u-strasbg.fr/viz-bin/cat/V/136)