Ensiklopedia Dunia

From Wikipedia, the free encyclopedia

NGC 903
legacy surveys image of NGC 903 (right) and NGC 904
Observation data (J2000 epoch)
Constellation	Aries
Right ascension	02^h 24^m 00.89555^s^[1]
Declination	+27° 21′ 23.1264″^[1]
Redshift	0.01682^[2]
Heliocentric radial velocity	5000 km/s^[2]
Distance	231.0 ± 16.2 Mly (70.83 ± 4.97 Mpc)^[3]
Apparent magnitude (B)	16.71^[4]
Other designations
PGC 9097^[2]

NGC 903 is a lenticular galaxy in the constellation Aries. It is estimated to be about 230 million light-years from the Milky Way^[3] and has a diameter of approximately 35,000 ly. NGC 903 was discovered on 13 December 1884 by the astronomer Edouard Stephan.^[5]^[6]

References

^ ^a ^b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
^ ^a ^b ^c "NGC 903". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-25.
^ ^a ^b "Results for object NGC 0903 (NGC 903)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-05-25.
^ "Search specification: NGC 903". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2020-05-25.
^ Ford, Dominic. "The galaxy NGC 903 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-21.
^ "Revised NGC Data for NGC 903". spider.seds.org. Retrieved 2020-03-21.

External links

Media related to NGC 903 at Wikimedia Commons

New General Catalogue 1 to 1000

1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
555
559
560
561
568
570
575
578
581
584
585
588
592
595
596
598
600
602
603
604
605
606
607
608
610
611
612
613
615
616
620
622
623
624
625
626
628
629
630
633
634
635
636
637
638
643
644
645
646
650
651
654
655
656
657
659
660
662
663
664
665
668
669
670
672
673
676
677
679
680
681
682
684
685
687
688
690
691
694
695
700
701
703
704
705
706
708
709
710
712
713
714
716
717
719
720
721
725
728
730
731
732
733
734
735
736
737
739
740
741
747
750
751
752
753
755
757
759
760
763
764
765
766
767
768
769
770
771
772
774
777
779
781
782
784
785
788
790
793
800
801
802
803
804
805
806
807
810
811
812
813
814
817
819
820
821
822
823
824
825
828
830
833
834
838
839
840
843
846
847
850
852
855
860
861
862
863
864
866
869
871
874
877
880
884
885
890
891
895
896
900
901
902
903
904
905
906
908
910
911
912
913
918
920
922
925
930
931
935
936
937
938
939
940
941
945
948
950
952
953
956
957
958
959
960
965
966
970
971
972
973
979
980
985
986
988
990
991
992
995
996
997
998
999
1000

Constellation of Aries

Stars

Bayer	α (Hamal) β (Sheratan) γ (Mesarthim) δ (Botein) ε ζ η θ ι κ λ μ ν ξ ο π ρ¹ ρ² ρ³ σ τ¹ τ²
Flamsteed	1 4 7 10 11 14 15 16 19 20 21 23 26 27 29 30 31 33 35 36 38 39 (Lilii Borea) 40 41 (Bharani) 47 49 50 51 52 53 54 55 56 59 60 62 64 65 66 54 Cet 85 Cet
Variable	TZ UX VZ (16 Tri)
HR	577 728 803 952 999
HD	12661 20367
Other	BD+20°307 HIP 14810 HAT-P-25 Teegarden's Star WASP-11/HAT-P-10 WD 0145+234

Exoplanets	α Arietis b HD 12661 b c HIP 14810 b c d Teegarden's Star b c WASP-11b/HAT-P-10b

Galaxies

NGC	677 680 691 694 695 716 765 770 772 774 781 803 817 820 821 871 877 900 901 903 904 918 935 938 972 990 992 1024 1134 1156 1168
Other	1ES 0229+200 3C 79 4C +28.07 AO 0235+164 IC 167 IC 1801 PSO J0309+27 Segue 2 UGC 2140

Galaxy clusters	MS 0302+17

Astronomical events	GRB 060218

See also

References

External links