Uncataloged OIII regions
Objects in this list were detected in [OIII] light. Usually they also can be seen in other wavelengths.Click the link in the first column to query for images on this site. A detailed description of the table and catalog can be found on the catalog's main page.
| Query link | ID | RA in h m s | DEC in ° ′ ″ | GLON in ° | GLAT in ° | Major diameter in ′ | Minor diameter in ′ | Angle in ° | Old ID | Publication date | Comment |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Images | O184.8 | 6 23 07.0 | +28 00 37 | 184.8435 | +6.7360 | 3.364 | K3 | 2024-06-28 | Tiny nebula bright in [OIII] and H-alpha. | ||
| Images | O190.7 | 5 56 00.3 | +17 57 41 | 190.6554 | -3.5641 | 10.10 | K5 | 2024-06-28 | Small nebula bright in [OIII] and H-alpha. Possible ionization source hot subdwarf KPD 0553+1755: PN candidate. | ||
| (KPD 0553+1755) | 5 56 02.3 | +17 56 13 | 190.6804 | -3.5695 | Possible progenitor of O190.7. Distance according to Gaia DR3: about 1900 pc. | ||||||
| Images | O200.0 | 7 41 48.4 | +19 56 34 | 200.0324 | +19.7501 | 1015 | 181.5 | 173 | K1a, O201.5 | 2024-06-28 | Large (17° x 2.5°) arc with dominant [OIII] emissions |
| (O200.0a) | 7 42 39.7 | +21 04 02 | 199.0072 | +20.3643 | 183.8 | 120.0 | 173 | K1b, O201.5a | 2024-06-28 | Part of O200.0 only visible in H-alpha and [SII] | |
| (O200.0b) | 7 50 53.0 | +12 31 23 | 208.1575 | +18.7661 | 181.1 | 43.90 | 175 | O201.5b | 2025-05-22 | Very faint OIII filament that appear to belong to O200.0 | |
| Images | O205.0 | 7 55 18.1 | +16 14 54 | 204.9999 | +21.2606 | 309.9 | 99.86 | 167 | K1c, O204.0 | 2024-06-28 | Filaments that might belong to Monogem Ring and emit at all three wavelengths |
| Images | O026.2 | 7 28 43.4 | +13 20 51 | 205.0103 | +14.2130 | 30.23 | 20.46 | 133 | 2025-05-22 | Faint halo of the bright center structure O026.2a. | |
| (O026.2a) | 19 43 26.9 | -13 44 47 | 26.1932 | -17.6294 | 8.204 | 2025-05-22 | Filled OIII ring. Very faint in H-alpha. | ||||
| Images | O027.9 | 19 50 45.2 | -12 46 00 | 27.9095 | -18.8392 | 311.6 | 77.23 | 83 | 2025-05-22 | OIII filament. Ends are also visible in H-alpha. Probably not related to O026.1. | |
| Images | O043.0 | 19 31 33.2 | +6 07 50 | 43.0091 | -6.0504 | 15.59 | 7.777 | 153 | 2025-05-22 | Faint OIII region also visible in H-alpha | |
| Images | O043.8 | 19 03 38.2 | +10 42 21 | 43.8442 | +2.1880 | 10.87 | 2025-05-22 | Faint in [OIII] but clearly visible in H-alpha. | |||
| Images | O047.3 | 19 52 24.4 | +8 10 20 | 47.3299 | -9.6010 | 10.18 | 2025-05-22 | Very faint OIII and HII region. | |||
| Images | O058.9 | 20 50 57.8 | +12 18 37 | 58.8518 | -19.6324 | 122.2 | 2025-05-22 | OIII region possibly belonging to HII/SII filaments in the same region. | |||
| Images | O061.2 | 18 56 18.0 | +30 41 41 | 61.2175 | +12.5052 | 13.93 | 2025-05-22 | ||||
| Images | O074.2 | 21 08 24.6 | +27 50 53 | 74.2531 | -13.2853 | 48.31 | 2025-05-22 | Faint OIII region with white dwarf GALEX J210824.9+275048 in the center: PN candidate. | |||
| (GALEX J210824.9+275048) | 21 08 25.0 | +27 50 50 | 74.2532 | -13.2868 | Possible progenitor of O074.2. Distance according to Gaia DR3: about 500 pc. | ||||||
| Images | O077.4 | 21 02 08.9 | +33 02 48 | 77.3637 | -8.8659 | 68.82 | 18.23 | 55 | 2025-05-22 | OIII/SII filament. Probably a part of a SNR. | |
| Images | O081.9 | 21 51 04.0 | +28 58 58 | 81.9365 | -19.1879 | 285.8 | 2025-05-22 | Large OIII region with very nearby hot subdwarf BD+28 4211 in the center: PN candidate. | |||
| (BD+28 4211) | 21 51 11.0 | +28 51 50 | 81.8728 | -19.2934 | Possible progenitor of O081.9. Distance according to Gaia DR3: about 110 pc. | ||||||
| Images | O084.4 | 19 26 00.9 | +52 50 03 | 84.4232 | +16.4130 | 74.56 | 2025-05-22 | Faint but large object. Possibly ionized by the hot subdwarf GALEX J192429.7+530554 (not in the center of the OIII region). | |||
| (GALEX J192429.7+530554) | 19 24 29.6 | +53 05 54 | 84.5819 | +16.7279 | Possible ionization source of O084.4. Distance according to Gaia DR3: about 780pc. | ||||||
| Images | O083.6 | 19 53 28.3 | +49 46 27 | 83.5565 | +11.2135 | 26.49 | 8.912 | 106 | 2025-05-22 | Elongated OIII object also visible in H-alpha. | |
| Images | O092.7 | 22 45 25.9 | +29 40 54 | 92.6838 | -25.6878 | 67.42 | 44.34 | 164 | 2025-05-22 | Very faint but visible in [OIII], [SII] and H-alpha. | |
| Images | O100.8 | 20 49 59.7 | +64 58 40 | 100.7540 | +13.1219 | 37.29 | 2025-05-22 | Faint OIII region also visible in [SII]. White dwarf candidate Gaia DR3 2197568743407319552 in center: PN candidate | |||
| (Gaia DR3 21975..319552) | 20 49 52.8 | +64 55 53 | 100.7087 | +13.1035 | Gaia DR3 2197568743407319552. Possible progenitor of O100.8. Distance according to Gaia DR3: about 1000pc | ||||||
| Images | O102.9 | 18 30 36.4 | +72 12 40 | 102.9072 | +27.3138 | 37.88 | 2025-05-22 | Very faint OIII region with white dwarf HS 1830+7209 in the center: PN candidate | |||
| (HS 1830+7209) | 18 30 04.7 | +72 11 36 | 102.8839 | +27.3528 | Possible progenitor of O102.9. Distance according to Gaia DR3: about 3700 pc. | ||||||
| Images | O103.7 | 20 02 59.6 | +71 00 26 | 103.6866 | +20.0102 | 183.0 | 2025-05-22 | Bright nebula visible in [OIII], [SII], and H-alpha. The bright H-alpha spot near the northern boundary of the OIII region is EGB 10 and is currently classified as a galaxy (2013MNRAS.431....2F), diffuse nebula (1988PASP..100..680H), or possible planetary nebula (1984PASP...96..283E). Due to its position and morphology, EGB 10 may be unrelated to the large structure. | |||
| (EGB 10) | 20 04 24.0 | +71 48 00 | 104.4993 | +20.2529 | |||||||
| Images | O104.4 | 15 02 50.6 | +66 00 50 | 104.3887 | +46.0993 | 164.3 | 2025-05-22 | Large and faint OIII ring. Possibly ionized by the white dwarf PG 1501+664: PN candidate. | |||
| (PG 1501+664) | 15 02 09.6 | +66 12 19 | 104.6518 | +46.0095 | Possible ionization source of O104.4. Distance according to Gaia DR3: about 460 pc. | ||||||
| Images | O106.4 | 21 48 40.1 | +66 58 29 | 106.4113 | +10.1660 | 74.25 | 18.25 | 22 | 2025-05-22 | OIII filament in a region with many HII/SII filaments. | |
| Images | O109.4 | 22 27 39.1 | +66 44 08 | 109.4002 | +7.7197 | 1.887 | 2025-05-22 | Tiny but bright OIII object. Also visible in H-alpha. | |||
| (O109.4a) | 22 27 39.6 | +66 44 23 | 109.4032 | +7.7228 | 8.514 | 2020-05-28 | There might be a very faint halo around O109.4 | ||||
| Images | O109.6 | 22 14 05.5 | +69 01 19 | 109.5953 | +10.3303 | 116.7 | 28.69 | 84 | 2025-05-22 | OIII filament in a region with many HII/SII filaments. | |
| Images | O110.1 | 23 56 19.0 | +34 07 56 | 110.1050 | -27.3628 | 30.18 | 10.91 | 103 | 2025-05-22 | Faint OIII arc. | |
| Images | O111.7 | 23 23 00.4 | +58 56 14 | 111.7277 | -1.9973 | 11.05 | 2025-05-22 | OIII region also with faint H-alpha emissions. | |||
| Images | O111.9 | 23 40 18.9 | +51 53 56 | 111.9194 | -9.4455 | 21.56 | H112.0 | 2023-02-05 | Was H112.0. Much larger in OIII. | ||
| Images | O119.8 | 0 41 38.9 | +20 10 11 | 119.8083 | -42.6427 | 40.34 | 2025-05-22 | OIII ring probably ionized by the White Dwarf PG 0038+199: PN candidate. | |||
| (PG 0038+199) | 0 41 35.3 | +20 09 17 | 119.7882 | -42.6569 | Likely the ionization source of O119.8. Distance according to Gaia DR3: about 400pc. | ||||||
| Images | O138.5 | 3 08 06.4 | +61 25 11 | 138.5355 | +2.7595 | 44.62 | 2025-05-22 | Faint OIII region hidden within or behind molecular clouds. | |||
| Images | O141.6 | 8 23 53.1 | +72 59 12 | 141.5530 | +32.5641 | 21.43 | H147.7 | 2024-10-24 | Also very faint [OIII] emissions. Was H147.7. | ||
| Images | O159.1 | 4 37 02.9 | +44 49 01 | 159.1663 | -1.6016 | 22.36 | 16.80 | 110 | 2025-05-22 | Faint in [OIII], but also some H-alpha emissions. In the center of the OIII region there is the white dwarf Gaia DR3 253119465183909760: PN candidate | |
| (Gaia DR3 25311..909760) | 4 37 31.9 | +44 48 13 | 159.2339 | -1.5469 | Possible ionization source of O159.1. Distance according to Gaia DR3: about 60pc. | ||||||
| Images | O163.8 | 9 56 28.1 | +51 45 24 | 163.7755 | +49.1242 | 36.61 | 20.35 | 52 | H163.6 | 2024-10-24 | Was H163.6. Larger in [OIII]. Possibly ionized (but not in the center of the OIII region) by the hot subdwarf GD 300. |
| (GD 300) | 9 55 19.5 | +51 36 59 | 164.0681 | +49.0044 | Gaia DR3 253119465183909760. Possible ionization source of O163.8. Distance according to Gaia DR3: about 590 pc. | ||||||
| Images | O166.6 | 4 14 20.8 | +30 23 27 | 166.6137 | -14.7905 | 2.516 | 2025-05-22 | Tiny object clearly visible in [OIII] and H-alpha. | |||
| Images | O168.7 | 5 09 26.8 | +37 32 06 | 168.6561 | -1.4900 | 93.62 | H168.8 | 2022-10-19 | Faint [OIII] ring. Possible SNR. Was H168.8. | ||
| Images | O170.8 | 10 28 55.9 | +45 14 11 | 170.8107 | +56.4258 | 494.4 | 170.5 | 124 | H170.2 | 2024-10-25 | Was H170.2. Larger with [OIII] and [SII] emissions. Several white dwarfs in the OIII region. |
| Images | O176.9 | 5 25 21.8 | +29 47 46 | 176.8927 | -3.2509 | 53.58 | 2025-05-22 | Faint emission nebula visible in [OIII], [SII] and H-alpha. Possibly ionized by HD 35347. | |||
| (HD 35347) | 5 25 17.8 | +29 36 54 | 177.0351 | -3.3641 | Possible ionization source of O176.8. Distance according to Gaia DR3: about 1600 pc. | ||||||
| Images | O178.2 | 5 47 20.8 | +31 14 15 | 178.2272 | +1.5143 | 45.37 | 2025-05-22 | Faint OIII region. Also visible in H-alpha. | |||
| Images | O179.5 | 6 46 23.0 | +36 07 57 | 179.5078 | +14.6564 | 44.32 | 2025-05-22 | Unstructured nebula only visible in [OIII]. | |||
| Images | O182.3 | 5 38 27.4 | +25 13 05 | 182.3214 | -3.3139 | 38.07 | 6.212 | 140 | 2025-05-22 | Very faint filament which is at least visible on [OIII] and H-alpha | |
| Images | O182.8 | 5 43 31.5 | +25 19 03 | 182.8424 | -2.2882 | 37.71 | 2025-05-22 | Very faint OIII object within SII and HII filaments. Possibly ionized by HD 38010 | |||
| (HD 38010) | 5 43 39.1 | +25 26 22 | 182.7534 | -2.2002 | 2025-05-22 | Possible ionization source of .... Distance according to Gaia DR3: about 780 pc | |||||
| Images | O183.7 | 6 06 16.2 | +27 21 15 | 183.6586 | +3.1379 | 19.34 | 2025-05-22 | ||||
| Images | O187.1 | 3 48 30.9 | +0 46 25 | 187.0593 | -39.1297 | 27.30 | 2025-05-22 | OIII region probably ionized by White Dwarf KUV 03459+0037: PN candidate. | |||
| (KUV 03459+0037) | 3 48 31.3 | +0 46 16 | 187.0632 | -39.1296 | Probably the ionization source of O187.1. Distance according to Gaia DR3: about 390 pc. | ||||||
| Images | O190.7 | 7 16 03.8 | +27 03 21 | 190.7355 | +17.0020 | 65.85 | 24.44 | 156 | 2025-05-22 | Faint OIII filament that is also visible in H-alpha. | |
| Images | O192.3 | 6 25 18.8 | +19 52 30 | 192.3238 | +3.4296 | 83.50 | 2025-05-22 | Large OIII region. There are several O stars in that direction, located at different distances, e.g. HD 256725 or HD 44811. It is uncertain whether the much smaller HII structure SH2-253 is related to this object. | |||
| (HD 256725) | 6 25 01.3 | +19 50 56 | 192.3150 | +3.3566 | Possible ionization source of O192.3. Distance according to Gaia DR3: about 4500 pc. | ||||||
| (HD 44811) | 6 24 38.4 | +19 42 16 | 192.4013 | +3.2098 | Possible ionization source of O192.3. Distance according to Gaia DR3: about 2000 pc. | ||||||
| Images | O204.5 | 7 36 14.1 | +14 44 15 | 204.4925 | +16.4492 | 37.39 | 2025-05-22 | Faint OIII region which may be ionized by the nearby white dwarf UCAC4 524-042847: PN candidate. | |||
| (UCAC4 524-042847) | 7 36 07.9 | +14 44 51 | 204.4722 | +16.4307 | Possible ionization source of O204.5. Distance according to Gaia DR3: about 150 pc. | ||||||
| Images | O211.2 | 7 29 43.5 | +6 47 13 | 211.1837 | +11.5859 | 34.57 | 22.09 | 32 | 2025-05-22 | Possibly ionized by the white dwarf Gaia DR3 3141806239596379136. | |
| (Gaia DR3 31418..379136) | 7 29 22.2 | +6 45 21 | 211.1722 | +11.4935 | Gaia DR3 3141806239596379136. Possible ionization source of O211.2. Distance according to Gaia DR3: about 290 pc | ||||||
| Images | O220.2 | 6 02 35.5 | -13 59 38 | 220.2401 | -17.0334 | 73.10 | 2025-05-22 | Very faint but large structure. Possibly ionized by white dwarf UCAC4 381-011163: PN candidate. | |||
| (UCAC4 381-011163) | 6 02 45.0 | -13 51 04 | 220.1209 | -16.9392 | Possible ionization source of O220.2. Distance according to Gaia DR3: about 390 pc. |
