Constellation Horologium (Clock)

Horologium
Horologium: IAU Constellation Map [150]

Properties

Horologium is an amorphous place in the sky with stars weaker than the 4th magnitude. It is located between Eridanus near the bright star Achernar and the similarly inconspicuous constellation Reticulum. The covered area is 249 square degrees and the center culminates around midnight on November 24th. For Central Europe it just comes up just a little over the southern horizon. [9, 15]

Data for constellation Horologium [150]
IAU NameHorologium
IAU GenitiveHorologii
IAU Abbr.Hor
English NameClock
Season (47° N)November … December
Right Ascension02h 12m 49s … 04h 20m 18s
Declination-67° 02' 09" … -39° 38' 13"
Area249 deg2
Neighbours (N↻)Eri, Hyi, Ret, Dor, Cae

History

The constellation belongs to the group of figures that represent mechanical instruments and were introduced by the French Lacaille in 1752. [7]

Catalogs

Yale Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) [154]
HR B F RA [hms] Dec [dms] vMag spType dMag Sep ["]
714λ02 24 53.9-60 18 435.35 F2III
778η02 37 24.4-52 32 355.31 A6V
802ζ02 40 39.6-54 33 005.21 F4IV
810ι02 42 33.5-50 48 015.41 G0V
833γ02 45 27.5-63 42 165.74 G8III-IV 7.320.0
852ν02 49 01.5-62 48 245.26 A2V
909β02 58 47.8-64 04 174.99 A3-5IIIm:
934μ03 03 36.8-59 44 165.11 F0IV
1302δ04 10 50.6-41 59 374.93 A9V
1326α04 14 00.1-42 17 403.86 K1III

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
Globular Clusters
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 126103 12 15.3-55 12 59II8.36.8globular, B, L, R, rrGCL 5, ESO 155-SC11
Galaxies
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 88802 17 27.1-59 51 38E1/P14.013.00.8 × 0.8eF, S, R, 2 or 3 vF st nrESO 115-2, AM 0215-600
NGC 102502 36 19.9-54 51 49SBb13.813.10.9 × 0.5eF, S, R, p of 2ESO 154-4, IRAS 02347-5504
NGC 103102 36 38.6-54 51 32SBa13.412.51.9 × 1.1F, S, R, gbM, * 11 s 2'ESO 154-5, AM 0235-550
NGC 109602 43 49.3-59 54 50SBbc13.512.81.9 × 1.8F, pS, R, glbMESO 115-28, AM 0242-600, IRAS 02425-6007
NGC 113502 50 47.2-54 55 46Scd15.514.80.7 × 0.3F, R, gbMESO 154-18
NGC 113602 50 53.6-54 58 34SBa13.813.01.4 × 1.2F, R, gbMESO 154-19, FAIR 732, AM 0249-551, IRAS 02493-5510
NGC 124403 06 31.0-66 46 33Sab13.612.81.9 × 0.4F, S, pmE, gbMESO 82-8, AM 0305-665, IRAS 03058-6657
NGC 124603 07 02.3-66 56 18E513.912.91.3 × 0.8pF, S, R, glbMESO 82-9, FAIR 229
NGC 124903 10 01.1-53 20 10SBc12.211.84.7 × 2.5B, L, vmE 80°, vgbMESO 155-6, IRAS 03085-5331
NGC 131103 20 06.7-52 11 14SBm13.413.03 × 0.8F, pL, mE 37°, gbMESO 200-7, IRAS 03186-5222
NGC 135603 30 40.7-50 18 33SBbc13.713.01.7 × 0.9vF, pL, iR, gbM, * nrESO 200-31, AM 0329-502, IRAS 03291-5028
NGC 141103 38 44.9-44 06 02E-S012.211.31.8 × 1.4B, pS, R, smbMIC 1943, MCG -7-8-4, ESO 249-11
NGC 143303 42 01.2-47 13 19SBa10.79.96.5 × 5.9vB, L, pmE, vsvmbM * 10ESO 249-14, AM 0340-472, IRAS 03404-4722
NGC 145703 44 31.3-44 38 45Sc11.410.77.6 × 1.7pF, pL, eE 42°, vgpmbMNGC 1448, ESO 249-16, MCG -7-8-5, AM 0342-444
NGC 147603 52 08.6-44 31 56Sa14.213.31.4 × 0.6cF, S, E 90°, gbMESO 249-24, MCG -7-9-1, AM 0350-444, IRAS 03504-4440
NGC 148303 52 47.7-47 28 42SBbc13.112.71.6 × 1.4cF, pL, R, vglbMESO 201-7, IRAS 03512-4737
NGC 149303 57 27.5-46 12 42SBc11.811.32.8 × 2.8F, cL, R, vglbMESO 249-33, AM 0355-462, IRAS 03558-4621
NGC 149403 57 42.5-48 54 34SBcd12.411.73.3 × 2F, L, R, vgvlbM, 3 st nESO 201-12, IRAS 03562-4902
NGC 149503 58 21.4-44 27 57Sc13.312.63 × 0.5eF, S, lE 90°, vgvlbMESO 249-34, MCG -7-9-4, AM 0356-443, IRAS 03567-4436
NGC 151004 03 32.5-43 23 59S013.513.03.2 × 1.8F, pL, R, vgmbMESO 250-3, MCG -7-9-6, IRAS 04019-4332
NGC 151204 03 54.0-43 20 56SBa11.110.38.9 × 5.6globular, B, cL, R, bM, rrESO 250-4, MCG -7-9-7, AM 0402-433, IRAS 04022-4329
NGC 152704 08 24.1-47 53 48SB011.710.83.9 × 1.5pB, pS, E 77°, vsmbMRNESO 201-20
IC 187703 03 09.6-50 30 41Sb16.215.40.8 × 0.2eF, vS, E 170°, prob nebESO 199-11
IC 1878 103 03 40.2-52 06 28SBab15.915.11.2 × 0.8eeF, eS, cE 5°, prob nebESO 199-13, FAIR 734, AM 0302-521
IC 1878 203 03 43.4-52 06 06Sa15.514.60.4 × 0.2eeF, eS, cE 5°, prob nebESO 199-13, FAIR 735, AM 0302-521
IC 187903 03 52.5-52 07 04S?15.915.11.2 × 0.2eeF, eS, mE 135°, stell NESO 199-14, FAIR 736, AM 0302-522
IC 189603 07 52.9-54 12 50Sab15.815.00.7 × 0.3eeF, eS, cE 10°, stell NESO 155-4
IC 1903 103 13 08.5-50 33 43E-S016.515.50.6 × 0.22 F neb, EESO 199-24
IC 1903 203 13 12.6-50 34 41E-S016.015.00.8 × 0.32 F neb, EESO 199-24
IC 1908 103 15 05.1-54 49 09SBb14.714.01.3 × 0.9vF, vS, spir branchESO 155-13, AM 0313-545, IRAS 03137-5500
IC 1908 203 15 05.7-54 49 19S16.015.20.5 × 0.3vF, vS, spir branchESO 155-13A, AM 0313-545
IC 191203 16 43.3-50 39 18Sc15.815.00.9 × 0.2S, E nsESO 200-1, IRAS 03151-5050
IC 191403 19 25.1-49 35 57SBcd13.312.93.4 × 1.6Spiral?ESO 200-3, IRAS 03179-4946
IC 191503 19 51.8-50 41 31SB? R16.215.40.6 × 0.5E nsESO 200-5
IC 191603 20 16.2-49 02 30SB?15.414.60.7 × 0.6F, S, R, 2 st spESO 200-8, AM 0318-491
IC 191703 22 12.3-53 11 08C16.015.00.3 × 0.3E nsESO 155-?23, arc of 4 f comps E
IC 192003 24 24.4-52 42 49SBa16.415.50.4 × 0.3StellarDRCG 44-152
IC 192203 24 43.0-50 44 25Sc16.916.10.4 × 0.2StellarESO 200-13
IC 192303 24 53.0-50 33 20S+S17.516.10.5 × 0.2Stellar
IC 192403 25 07.5-51 42 12Sc16.715.90.5 × 0.3E, stellarESO 200-17
IC 192503 25 25.6-51 16 00Sab14.814.10.8 × 0.6E npsf, stellIC 1929, ESO 200-21
IC 192603 25 18.8-51 42 04Sc16.615.80.5 × 0.2E, stellESO 200-20
IC 193203 25 54.0-51 20 34S0 R15.414.50.7 × 0.6E nsESO 200-22, FAIR 747
IC 193303 25 39.9-52 47 05SBc12.912.52.2 × 1.1lE spnfESO 155-25, IRAS 03242-5257
IC 193503 26 13.3-50 00 38Sc14.714.31.1 × 0.7Stell, E, spir ?ESO 200-23
IC 193603 26 27.9-51 19 23S16.015.20.7 × 0.2Stell, E npsfESO 200-24
IC 193703 26 47.4-48 42 10Sc15.014.10.9 × 0.5vF, vS, R, bMESO 200-25
IC 193803 27 10.4-53 00 36Sb15.514.70.8 × 0.6Perhaps D *ESO 155-32, DRCG 45-21
IC 194003 27 42.0-52 08 22SBab14.513.70.9 × 0.9bMESO 200-26, DRCG 45-178
IC 194203 27 54.0-52 40 32E315.414.40.7 × 0.5Stell, E nsESO 155-34, DRCG 45-62
IC 194403 29 39.9-47 59 47S15.714.90.5 × 0.4eF, eS, lE 20°ESO 200-28
IC 194503 29 16.4-52 37 37S016.015.00.8 × 0.2StellESO 155-38, DRCG 45-72
IC 194603 29 22.0-52 37 10SB0-a15.314.40.9 × 0.4StellESO 155-39, DRCG 45-71
IC 194703 30 32.6-50 20 20E215.514.80.5 × 0.4StellESO 200-30
IC 194803 30 49.9-47 57 52Sbc15.514.70.8 × 0.7eeF, S, RESO 200-32, FAIR 748, AM 0329-480
IC 194903 30 52.9-47 58 47Sbc13.713.11.1 × 0.9cF, vS, spir, cbMESO 200-33, FAIR 749, AM 0329-480, IRAS 03293-4808
IC 195003 31 04.3-50 25 58Sc15.114.51.4 × 0.4E npsfESO 200-35, IRAS 03295-5036
IC 195103 30 56.4-53 07 34Sbc17.116.30.5 × 0.2E spnfESO 155-43, DRCG 45-1
IC 195403 31 31.1-51 54 15SBb12.211.63 × 1.5F, pL, R, spirESO 200-36, IRAS 03300-5204
IC 195703 32 13.4-52 27 25Sbc16.515.70.9 × 0.2E spnfESO 155-48, FGCE 332, DRCG 45-124
IC 195803 32 46.6-51 26 28S16.015.20.4 × 0.3StellESO 200-38
IC 195903 33 12.1-50 24 44SBm13.212.82.9 × 0.7E npsfESO 200-39, IRAS 03317-5934, SAO 233152 (5.7) 6' p
IC 196103 33 33.3-48 57 03Sc15.514.80.6 × 0.4eF, vS, cE 20°ESO 200-41, AM 0332-490, IRAS 03320-4907
IC 196603 34 03.3-51 19 20Sc15.614.80.6 × 0.3StellESO 200-42
IC 196803 34 37.8-50 39 05Sc16.215.40.5 × 0.3StellESO 200-43
IC 196903 36 13.9-45 10 45Sab15.614.81.3 × 0.2eF, vS, cE 50°, cbMESO 249-5, AM 0334-452
IC 197003 36 31.2-43 57 24Sb12.812.03.1 × 0.6eF, vS, eE 75°ESO 249-7, MCG -7-8-3, AM 0334-440, IRAS 03348-4407
IC 197103 35 57.5-52 39 00Sa?15.915.10.7 × 0.3E pfESO 156-1, FAIR 388
IC 197203 36 21.2-51 58 04Sc16.415.60.8 × 0.2EESO 200-48
IC 197303 36 20.9-51 59 38S16.715.90.5 × 0.2EESO 200-49
IC 197403 36 42.2-49 33 01Sc15.915.10.8 × 0.3E npsfESO 200-50
IC 197603 37 08.9-47 26 16Sc15.815.00.8 × 0.5eF, eS, RESO 200-51
IC 197803 37 05.5-50 09 04Sab15.714.91.1 × 0.2E nsESO 200-52
IC 198403 39 50.2-47 04 35Sbc16.015.20.7 × 0.2eeF, eS, mE 150°ESO 249-12
IC 198603 40 35.2-45 21 21Sm14.914.31 × 0.7eF, eS, cE 135°ESO 249-13, AM 0338-453, multiple system ?
IC 198903 41 54.4-50 57 28E-S014.513.51.1 × 0.7stellESO 200-55
IC 199103 44 46.4-51 31 26Sc16.215.40.7 × 0.3stell, E spnfESO 200-56
IC 199403 45 55.1-51 38 36S16.015.20.7 × 0.2E nsESO 200-58
IC 200003 49 07.6-48 51 30SBc12.611.94.1 × 0.8cB, L, eE 80°, vmbMESO 201-3, IRAS 03476-4900
IC 200403 51 45.6-49 25 09Sa15.114.20.8 × 0.6eF, SESO 201-6
IC 200903 53 34.6-48 59 28IBm14.413.81.8 × 1.2eF, SESO 201-8
IC 201503 58 11.4-40 23 21Sc15.614.90.5 × 0.4eF, S, R, bM, suspESO 302-22
IC 203504 09 01.8-45 31 02SB012.511.81.2 × 0.9F, vS, RESO 250-7, AM 0407-453
IC 203604 09 55.0-39 41 19SBc14.213.51 × 0.8eeF, pS, R, v diffic, * 9 fESO 303-1, MCG -7-9-10

References

7«Der grosse Kosmos-Himmelsführer» von Ian Ridpath und Wil Tirion; Kosmos Verlag; ISBN 3-440-05787-9
9«Drehbare Sternkarte SIRIUS» von H. Suter-Haug; Hallwag-Verlag, Bern
15«Hartung's Astronomical Objects for Southern Telescopes» by David Malin and David J. Frew; Melbourne University Press 1995; ISBN 0-522-84553-3
150IAU: The Constellations, 11. Oktober 2020; iau.org/public/themes/constellations
154Yale Bright Star Catalog, 15. Oktober 2020; tdc-www.harvard.edu/catalogs/bsc5.html
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)