UGC 1840 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "UGC 1840" in English language version.

Last modified: 08:30:03, 18 October 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

240^th place

473^rd place

33adsabs.harvard.edu

14^th place

9^th place

2^nd place

2^nd place

11mantrapskies.com

low place

low place

4^th place

4^th place

low place

low place

11astro-richweb.net

low place

low place

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Vorontsov-Vel'Yaminov, B. A.; Arkhipova, V. P. (1964). "Morphological catalogue of galaxies. Part 2". Morphological Catalogue of Galaxies. C02. Bibcode:1964MCG...C02....0V.
Chatterjee, T. K. (1984-11-01). "The Formation of Ring Galaxies". Astrophysics and Space Science. 106 (2): 309–339. Bibcode:1984Ap&SS.106..309C. doi:10.1007/BF00650358. ISSN 0004-640X.
Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.

astro-richweb.net (Global: low place; English: low place)

"David's Astronomy - ARP Peculiar Galaxy Objects". www.astro-richweb.net. Retrieved 2024-04-22.

astrobin.com (Global: low place; English: low place)

Iovene, Salvatore. "UGC1840 (Arp 145) Irregular galaxy". AstroBin. Retrieved 2024-04-22.

caltech.edu (Global: 240^th place; English: 473^rd place)

ned.ipac.caltech.edu

"Results for object NGC UGC 1840 (UGC 1840)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2024-11-13.
"Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-22.
"NED Search Results for UGC 1840 NED02". ned.ipac.caltech.edu. Retrieved 2024-04-22.
"NED Search Results for UGC 1840 NED01". ned.ipac.caltech.edu. Retrieved 2024-04-22.
"Collisional Ring Galaxies - P.N. Appleton & C. Struck-Marcell". ned.ipac.caltech.edu. Retrieved 2024-04-22.

doi.org (Global: 2^nd place; English: 2^nd place)

Chatterjee, T. K. (1984-11-01). "The Formation of Ring Galaxies". Astrophysics and Space Science. 106 (2): 309–339. Bibcode:1984Ap&SS.106..309C. doi:10.1007/BF00650358. ISSN 0004-640X.
Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.

mantrapskies.com (Global: low place; English: low place)

images.mantrapskies.com

"Mantrap Skies Astronomical Image Catalog: ARP145". images.mantrapskies.com. Retrieved 2024-04-22.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Chatterjee, T. K. (1984-11-01). "The Formation of Ring Galaxies". Astrophysics and Space Science. 106 (2): 309–339. Bibcode:1984Ap&SS.106..309C. doi:10.1007/BF00650358. ISSN 0004-640X.