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Hydra

うみへび座

Genitive: Hydrae

Equatorial 春 1303 sq° Hya

最輝星： Alphard (mag 1.98)

RA 10h 39m 60.0s · Dec -20d 00' 0"

星図で開く ファインダーチャート カタログを見る
Hydra - 神話

神話

ヘラクレスが2番目の功業で退治したレルナのヒュドラを表す。首を切り落とすたびに2本の首が生えてくる水蛇。

観測の見どころ

全天で最大の星座で、100度以上にわたって広がる。M48（散開星団）、M68（球状星団）、M83（南の回転花火銀河）、木星の幽霊星雲（NGC 3242）を含む。

When is Hydra up?

Showing 50.0° N, 0.0° E. Save your location for a personalised chart.
12:0015:0018:0021:0000:0003:0006:0009:0012:00JanJan 00:00 — altitude 9°Jan 01:00 — altitude 15°Jan 02:00 — altitude 19°Jan 03:00 — altitude 20°Jan 04:00 — altitude 19°Jan 05:00 — altitude 15°Jan 06:00 — altitude 10° (twilight)Jan 07:00 — altitude 2° (twilight)Jan 08:00 — altitude -6° (daytime)Jan 09:00 — altitude -15° (daytime)Jan 10:00 — altitude -25° (daytime)Jan 11:00 — altitude -34° (daytime)Jan 12:00 — altitude -44° (daytime)Jan 13:00 — altitude -52° (daytime)Jan 14:00 — altitude -58° (daytime)Jan 15:00 — altitude -60° (daytime)Jan 16:00 — altitude -58° (daytime)Jan 17:00 — altitude -52° (daytime)Jan 18:00 — altitude -43° (twilight)Jan 19:00 — altitude -34°Jan 20:00 — altitude -25°Jan 21:00 — altitude -15°Jan 22:00 — altitude -6°Jan 23:00 — altitude 3°Jan: best around 03:00 localFebFeb 00:00 — altitude 19°Feb 01:00 — altitude 20°Feb 02:00 — altitude 19°Feb 03:00 — altitude 15°Feb 04:00 — altitude 9°Feb 05:00 — altitude 2°Feb 06:00 — altitude -6° (twilight)Feb 07:00 — altitude -15° (daytime)Feb 08:00 — altitude -25° (daytime)Feb 09:00 — altitude -35° (daytime)Feb 10:00 — altitude -44° (daytime)Feb 11:00 — altitude -52° (daytime)Feb 12:00 — altitude -58° (daytime)Feb 13:00 — altitude -60° (daytime)Feb 14:00 — altitude -58° (daytime)Feb 15:00 — altitude -51° (daytime)Feb 16:00 — altitude -43° (daytime)Feb 17:00 — altitude -34° (daytime)Feb 18:00 — altitude -24° (twilight)Feb 19:00 — altitude -15° (twilight)Feb 20:00 — altitude -6°Feb 21:00 — altitude 3°Feb 22:00 — altitude 10°Feb 23:00 — altitude 15°Feb: best around 01:00 localMarMar 00:00 — altitude 19°Mar 01:00 — altitude 16°Mar 02:00 — altitude 10°Mar 03:00 — altitude 3°Mar 04:00 — altitude -5°Mar 05:00 — altitude -14° (twilight)Mar 06:00 — altitude -23° (daytime)Mar 07:00 — altitude -33° (daytime)Mar 08:00 — altitude -42° (daytime)Mar 09:00 — altitude -51° (daytime)Mar 10:00 — altitude -57° (daytime)Mar 11:00 — altitude -60° (daytime)Mar 12:00 — altitude -58° (daytime)Mar 13:00 — altitude -53° (daytime)Mar 14:00 — altitude -45° (daytime)Mar 15:00 — altitude -35° (daytime)Mar 16:00 — altitude -26° (daytime)Mar 17:00 — altitude -16° (daytime)Mar 18:00 — altitude -7° (daytime)Mar 19:00 — altitude 1° (twilight)Mar 20:00 — altitude 9°Mar 21:00 — altitude 15°Mar 22:00 — altitude 18°Mar 23:00 — altitude 20°Mar: best around 23:00 localAprApr 00:00 — altitude 10°Apr 01:00 — altitude 3°Apr 02:00 — altitude -5°Apr 03:00 — altitude -14°Apr 04:00 — altitude -24° (twilight)Apr 05:00 — altitude -33° (daytime)Apr 06:00 — altitude -43° (daytime)Apr 07:00 — altitude -51° (daytime)Apr 08:00 — altitude -57° (daytime)Apr 09:00 — altitude -60° (daytime)Apr 10:00 — altitude -58° (daytime)Apr 11:00 — altitude -52° (daytime)Apr 12:00 — altitude -44° (daytime)Apr 13:00 — altitude -35° (daytime)Apr 14:00 — altitude -26° (daytime)Apr 15:00 — altitude -16° (daytime)Apr 16:00 — altitude -7° (daytime)Apr 17:00 — altitude 2° (daytime)Apr 18:00 — altitude 9° (daytime)Apr 19:00 — altitude 15° (daytime)Apr 20:00 — altitude 19° (twilight)Apr 21:00 — altitude 20°Apr 22:00 — altitude 19°Apr 23:00 — altitude 15°Apr: best around 21:00 localMayMay 00:00 — altitude -5°May 01:00 — altitude -14°May 02:00 — altitude -23° (twilight)May 03:00 — altitude -33° (twilight)May 04:00 — altitude -42° (daytime)May 05:00 — altitude -51° (daytime)May 06:00 — altitude -57° (daytime)May 07:00 — altitude -60° (daytime)May 08:00 — altitude -58° (daytime)May 09:00 — altitude -53° (daytime)May 10:00 — altitude -45° (daytime)May 11:00 — altitude -35° (daytime)May 12:00 — altitude -26° (daytime)May 13:00 — altitude -16° (daytime)May 14:00 — altitude -7° (daytime)May 15:00 — altitude 1° (daytime)May 16:00 — altitude 9° (daytime)May 17:00 — altitude 15° (daytime)May 18:00 — altitude 18° (daytime)May 19:00 — altitude 20° (daytime)May 20:00 — altitude 19° (daytime)May 21:00 — altitude 16° (twilight)May 22:00 — altitude 10° (twilight)May 23:00 — altitude 3°May: best around 23:00 localJunJun 00:00 — altitude -24° (twilight)Jun 01:00 — altitude -33° (twilight)Jun 02:00 — altitude -43° (twilight)Jun 03:00 — altitude -51° (twilight)Jun 04:00 — altitude -57° (daytime)Jun 05:00 — altitude -60° (daytime)Jun 06:00 — altitude -58° (daytime)Jun 07:00 — altitude -52° (daytime)Jun 08:00 — altitude -44° (daytime)Jun 09:00 — altitude -35° (daytime)Jun 10:00 — altitude -26° (daytime)Jun 11:00 — altitude -16° (daytime)Jun 12:00 — altitude -7° (daytime)Jun 13:00 — altitude 2° (daytime)Jun 14:00 — altitude 9° (daytime)Jun 15:00 — altitude 15° (daytime)Jun 16:00 — altitude 19° (daytime)Jun 17:00 — altitude 20° (daytime)Jun 18:00 — altitude 19° (daytime)Jun 19:00 — altitude 15° (daytime)Jun 20:00 — altitude 10° (daytime)Jun 21:00 — altitude 3° (twilight)Jun 22:00 — altitude -6° (twilight)Jun 23:00 — altitude -15° (twilight)JulJul 00:00 — altitude -42°Jul 01:00 — altitude -51° (twilight)Jul 02:00 — altitude -57° (twilight)Jul 03:00 — altitude -60° (twilight)Jul 04:00 — altitude -58° (daytime)Jul 05:00 — altitude -53° (daytime)Jul 06:00 — altitude -45° (daytime)Jul 07:00 — altitude -36° (daytime)Jul 08:00 — altitude -26° (daytime)Jul 09:00 — altitude -16° (daytime)Jul 10:00 — altitude -7° (daytime)Jul 11:00 — altitude 1° (daytime)Jul 12:00 — altitude 9° (daytime)Jul 13:00 — altitude 15° (daytime)Jul 14:00 — altitude 18° (daytime)Jul 15:00 — altitude 20° (daytime)Jul 16:00 — altitude 19° (daytime)Jul 17:00 — altitude 16° (daytime)Jul 18:00 — altitude 10° (daytime)Jul 19:00 — altitude 3° (daytime)Jul 20:00 — altitude -5° (daytime)Jul 21:00 — altitude -14° (twilight)Jul 22:00 — altitude -24° (twilight)Jul 23:00 — altitude -34° (twilight)AugAug 00:00 — altitude -57°Aug 01:00 — altitude -60°Aug 02:00 — altitude -58°Aug 03:00 — altitude -52° (twilight)Aug 04:00 — altitude -44° (twilight)Aug 05:00 — altitude -35° (daytime)Aug 06:00 — altitude -26° (daytime)Aug 07:00 — altitude -16° (daytime)Aug 08:00 — altitude -7° (daytime)Aug 09:00 — altitude 2° (daytime)Aug 10:00 — altitude 9° (daytime)Aug 11:00 — altitude 15° (daytime)Aug 12:00 — altitude 19° (daytime)Aug 13:00 — altitude 20° (daytime)Aug 14:00 — altitude 19° (daytime)Aug 15:00 — altitude 15° (daytime)Aug 16:00 — altitude 10° (daytime)Aug 17:00 — altitude 3° (daytime)Aug 18:00 — altitude -6° (daytime)Aug 19:00 — altitude -15° (daytime)Aug 20:00 — altitude -24° (twilight)Aug 21:00 — altitude -34° (twilight)Aug 22:00 — altitude -43°Aug 23:00 — altitude -51°SepSep 00:00 — altitude -58°Sep 01:00 — altitude -52°Sep 02:00 — altitude -44°Sep 03:00 — altitude -35°Sep 04:00 — altitude -25° (twilight)Sep 05:00 — altitude -16° (twilight)Sep 06:00 — altitude -7° (daytime)Sep 07:00 — altitude 2° (daytime)Sep 08:00 — altitude 9° (daytime)Sep 09:00 — altitude 15° (daytime)Sep 10:00 — altitude 19° (daytime)Sep 11:00 — altitude 20° (daytime)Sep 12:00 — altitude 19° (daytime)Sep 13:00 — altitude 15° (daytime)Sep 14:00 — altitude 10° (daytime)Sep 15:00 — altitude 3° (daytime)Sep 16:00 — altitude -6° (daytime)Sep 17:00 — altitude -15° (daytime)Sep 18:00 — altitude -25° (daytime)Sep 19:00 — altitude -34° (twilight)Sep 20:00 — altitude -43° (twilight)Sep 21:00 — altitude -52°Sep 22:00 — altitude -58°Sep 23:00 — altitude -60°OctOct 00:00 — altitude -44°Oct 01:00 — altitude -35°Oct 02:00 — altitude -26°Oct 03:00 — altitude -16°Oct 04:00 — altitude -7°Oct 05:00 — altitude 2° (twilight)Oct 06:00 — altitude 9° (daytime)Oct 07:00 — altitude 15° (daytime)Oct 08:00 — altitude 19° (daytime)Oct 09:00 — altitude 20° (daytime)Oct 10:00 — altitude 19° (daytime)Oct 11:00 — altitude 15° (daytime)Oct 12:00 — altitude 10° (daytime)Oct 13:00 — altitude 3° (daytime)Oct 14:00 — altitude -6° (daytime)Oct 15:00 — altitude -15° (daytime)Oct 16:00 — altitude -24° (daytime)Oct 17:00 — altitude -34° (daytime)Oct 18:00 — altitude -43° (twilight)Oct 19:00 — altitude -51°Oct 20:00 — altitude -58°Oct 21:00 — altitude -60°Oct 22:00 — altitude -58°Oct 23:00 — altitude -52°NovNov 00:00 — altitude -25°Nov 01:00 — altitude -16°Nov 02:00 — altitude -7°Nov 03:00 — altitude 2°Nov 04:00 — altitude 9°Nov 05:00 — altitude 15°Nov 06:00 — altitude 19° (twilight)Nov 07:00 — altitude 20° (daytime)Nov 08:00 — altitude 19° (daytime)Nov 09:00 — altitude 15° (daytime)Nov 10:00 — altitude 10° (daytime)Nov 11:00 — altitude 3° (daytime)Nov 12:00 — altitude -6° (daytime)Nov 13:00 — altitude -15° (daytime)Nov 14:00 — altitude -25° (daytime)Nov 15:00 — altitude -34° (daytime)Nov 16:00 — altitude -43° (daytime)Nov 17:00 — altitude -52° (twilight)Nov 18:00 — altitude -58° (twilight)Nov 19:00 — altitude -60°Nov 20:00 — altitude -58°Nov 21:00 — altitude -52°Nov 22:00 — altitude -44°Nov 23:00 — altitude -34°Nov: best around 05:00 localDecDec 00:00 — altitude -7°Dec 01:00 — altitude 2°Dec 02:00 — altitude 9°Dec 03:00 — altitude 15°Dec 04:00 — altitude 19°Dec 05:00 — altitude 20°Dec 06:00 — altitude 19° (twilight)Dec 07:00 — altitude 15° (twilight)Dec 08:00 — altitude 10° (daytime)Dec 09:00 — altitude 3° (daytime)Dec 10:00 — altitude -6° (daytime)Dec 11:00 — altitude -15° (daytime)Dec 12:00 — altitude -24° (daytime)Dec 13:00 — altitude -34° (daytime)Dec 14:00 — altitude -43° (daytime)Dec 15:00 — altitude -51° (daytime)Dec 16:00 — altitude -58° (daytime)Dec 17:00 — altitude -60° (twilight)Dec 18:00 — altitude -58°Dec 19:00 — altitude -52°Dec 20:00 — altitude -44°Dec 21:00 — altitude -35°Dec 22:00 — altitude -25°Dec 23:00 — altitude -15°Dec: best around 05:00 local
below horizon astronomical dark — low to high altitude twilight daytime (sun up) best night-time hour

Right now

Daytime
Below horizon (-53°)

Upcoming (local)

Rise 15:49
Transit 20:05 20°
Set 00:23

Across the year

Best month February
Peak altitude 20°
Circumpolar here no
Dark-sky hours / year 1157

Neighboring Constellations

Leo Cancer Virgo Centaurus

見どころの天体 in Hydra

5
Messier 48 survey image
Messier 48

NGC 2548

5.5 mag 54. Easy
Messier 68 survey image
Messier 68

NGC 4590

7.8 mag 12.0 Easy
Ghost of Jupiter survey image
Ghost of Jupiter

NGC 3242

C59

7.8 mag 0.3 Medium
HIP 66400
5.78 mag 10.2″ B: 6.6 A7III Easy
HIP 56280
5.64 mag 9.6″ B: 5.7 F8V Easy

主な恒星 in Hydra

20
Alphard

HIP 46390; Alpha Hya; 30 Hya

1.98 mag 284.4″ B: 9.7 K3IIIa Medium
Gamma Hya

HIP 64962; Gamma Hya; 46 Hya

3.00 mag G8IIIa Easy
Zeta Hya

HIP 43813; Zeta Hya; 16 Hya

3.11 mag G8.5III Easy
Nu Hya

HIP 52943; Nu Hya

3.11 mag K1.5III Hdel-0.5 Easy
Pi Hya

HIP 68895; Pi Hya; 49 Hya

3.27 mag K1III-IV Easy
Ashlesha

HIP 43109; Epsilon Hya; 11 Hya

3.38 mag 0.3″ B: 5.6 G7III + A8III-IV: Easy
Xi Hya

HIP 56343; Xi Hya

3.54 mag 74.6″ B: 10.7 G7III Hard
Lambda Hya

HIP 49841; Lambda Hya; 41 Hya

3.61 mag 110.0″ B: 11.8 K0III CN+1 Very Hard
Mu Hya

HIP 51069; Mu Hya; 42 Hya

3.81 mag K4III Easy
Theta Hya

HIP 45336; Theta Hya; 22 Hya

3.88 mag 20.6″ B: 9.9 A0V Medium
HIP 41307
3.90 mag A1V Easy
Ukdah

HIP 47431; Iota Hya; 35 Hya

3.91 mag K2 III Easy
Zhang

HIP 48356; Upsilon1 Hya; 39 Hya

4.12 mag G7-III Easy
Delta Hya

HIP 42313; Delta Hya; 4 Hya

4.16 mag 2.7″ B: 10.7 A1Vnn Very Hard
Beta Hya

HIP 57936; Beta Hya

4.28 mag 0.6″ B: 5.5 B9IIIpSi Very Hard
Eta Hya

HIP 42799; Eta Hya; 7 Hya

4.30 mag B3V Easy
12 Hya

HIP 43067; 12 Hya

4.32 mag G8-IIIFe-1 Easy
Rho Hya

HIP 43234; Rho Hya; 13 Hya

4.36 mag 12.2″ B: 11.9 A0Vn Very Hard
58 Hya

HIP 72571; 58 Hya

4.41 mag K4III Easy
Minchir

HIP 42402; Sigma Hya; 5 Hya

4.44 mag K1+III Easy

二重星 in Hydra

15
HIP 66400
5.78 mag 10.2″ B: 6.6 A7III Easy
HIP 56280
5.64 mag 9.6″ B: 5.7 F8V Easy
HIP 49321
5.86 mag 21.2″ B: 7.0 A0V Easy
17 Hya

HIP 43822; 17 Hya

6.67 mag 4.0″ B: 6.9 A2m Medium
HIP 43798
5.75 mag 64.2″ B: 7.2 K2-3III Easy
20 Hya

HIP 44961; 20 Hya

5.46 mag 7.8″ B: 9.2 G8II Medium
54 Hya

HIP 72197; 54 Hya

4.94 mag 8.1″ B: 7.2 F2III-IV Easy
HIP 56620
5.74 mag 3.4″ B: 7.8 K0III Medium
HIP 57047
5.22 mag 66.1″ B: 8.3 K5III+F7V Easy
HIP 42951
6.41 mag 4.7″ B: 7.5 F2IV Easy
HIP 51475
6.51 mag 29.4″ B: 10.2 F7III Medium
R Hya

HIP 65835

4.97 mag 3.5 - 10.9 M M7IIIe Hard
Tau Hya

HIP 46509; Tau1 Hya; 31 Hya

4.60 mag 65.7″ B: 7.3 F6V Easy
HIP 53252
5.24 mag 119.6″ B: 9.6 F6V Medium
HIP 59307
6.17 mag 3.8″ B: 8.0 A0V Medium

変光星 in Hydra

5
R Hya

HIP 65835

4.97 mag 3.5 - 10.9 M M7IIIe Hard
V Hya

HIP 53085

6.00 mag 6.0 - 12.3 SRA C Very Hard
U Hya

HIP 52009

4.82 mag 4.56 - 5.40 SRB C5II Medium
21 Hya

HIP 45184; 21 Hya

6.11 mag 6.11 - 6.58 EA/DM A3III:m+A0V: Hard
LN Hya

HIP 63159

6.62 mag 6.57 - 6.90 SRD F3Ia Hard

深宇宙天体 in Hydra

30
散開星団 (1)
Messier 48 survey image
Messier 48

NGC 2548

5.5 mag 54. Easy
球状星団 (2)
Messier 68 survey image
Messier 68

NGC 4590

7.8 mag 12.0 Easy
Caldwell 66 survey image
Caldwell 66

NGC 5694

10.2 mag 4 Medium
銀河 (26)
Messier 83 survey image
Messier 83

NGC 5236

7.6 mag 11.2 SABc Hard
NGC 3621 survey image
NGC 3621
10.0 mag 10.0 SBcd Medium
NGC 2713 survey image
NGC 2713
11.7 mag 3.9 SBb Hard
NGC 2992 survey image
NGC 2992
11.9 mag 4.1 Sa Hard
NGC 3717 survey image
NGC 3717
12.0 mag 5.8 Sb Hard
NGC 2784 survey image
NGC 2784
10.1 mag 5.1 S0 Medium
NGC 3200 survey image
NGC 3200
12.0 mag 4.8 Sc Very Hard
NGC 3390 survey image
NGC 3390
12.2 mag 4.0 Sb Very Hard
NGC 5078 survey image
NGC 5078
12.0 mag 3.2 Sa Very Hard
IC 4351 survey image
IC 4351
12.0 mag 5.6 Sb Hard
NGC 2811 survey image
NGC 2811
11.3 mag 2.7 SBa Hard
NGC 2815 survey image
NGC 2815
13.0 mag 3.5 SBb Very Hard
NGC 2935 survey image
NGC 2935
12.0 mag 3.5 Sb Very Hard
NGC 2989 survey image
NGC 2989
13.0 mag 1.4 SABb Very Hard
NGC 2993 survey image
NGC 2993
12.6 mag 1.6 Sa Very Hard
NGC 5464 survey image
NGC 5464
13.0 mag 1.0 SBm Very Hard
NGC 5592 survey image
NGC 5592
13.0 mag 1.7 Sbc Very Hard
NGC 2781 survey image
NGC 2781
11.5 mag 3.9 S0-a Hard
NGC 2962 survey image
NGC 2962
11.7 mag 3.3 S0-a Hard
NGC 3285 survey image
NGC 3285
13.0 mag 2.5 Sa Very Hard
NGC 3404 survey image
NGC 3404
14.0 mag 2.6 SBab Very Hard
NGC 5135 survey image
NGC 5135
13.0 mag 2.4 Sab Very Hard
IC 2327 survey image
IC 2327
14.0 mag 1.5 SABa Very Hard
NGC 3146 survey image
NGC 3146
13.0 mag SBb Very Hard
NGC 3203 survey image
NGC 3203
13.0 mag 3.0 S0-a Very Hard
NGC 5101 survey image
NGC 5101
12.0 mag 5.5 S0-a Very Hard
惑星状星雲 (1)
Ghost of Jupiter survey image
Ghost of Jupiter

NGC 3242

C59

7.8 mag 0.3 Medium