NEXXUS 2 - The database for Nearby X-ray and extreme UV emitting Stars
Star Page - NS 2045-3120 A GJ 803 HIP 102409 HD 197481 CD-31 17815 AU Mic
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ROSAT Survey Field Image Browser SIMBAD entry
Star Information:
| RA (2000.0) | DE (2000.0) | μ [ "/yr ] | θ [ ° ] | Radial Velocity | Spectral Type | B | V | Distance [ pc ] |
| 20 45 09.49 | -31 20 27.14 | 0.456 | 142.1 | 1.2 | M1Ve | 10.05 | 8.61 | 9.87 |
XMM-Newton Pointed Observations:
| Detection Number | Sequence Id | Observation Time | Likelihood | log Lx | ESAC Links |
| 2XMM J204509.4-312028 | 0111420101 1 | 2000-10-13T15:28 to 2000-10-14T06:45 | 999.9999 | 29.41 | Postcard Server Observing Log |
| Detector | Filter | Count Rate | Exposure Time | Likelihood | OAX | HR1 | HR2 | HR3 | HR4 | log Lx |
| M1 | Thick | 3.01896 ± 0.00797 | 55179 | 999.9999 | 0.091 | 0.526 ± 0.003 | -0.277 ± 0.003 | -0.789 ± 0.003 | -0.856 ± 0.008 | 29.41 |
ROSAT All-Sky Survey (RASS):
| Detection Number | Count Rate | Background | Exposure Time | Likelihood | HR1 | HR2 | log Lx |
| 1RXS J204509.4-312023 | 5.952 ± 0.1208 | 0.00132 | 414 | 9999 | -0.07 ± 0.02 | 0.06 ± 0.03 | 29.62 |
ROSAT High Resolution Imager (HRI):
| Detection Number | Sequence Id | Count Rate | SNR | OAX | Exposure Time | Observation Date | Images | log Lx |
| 1RXH J204509.3-312025 | 200016 n00.005 | 0.7768 ± 0.00997 | 71.6 | 1 | 7717 | 1991-05-01 to 1991-05-04 | rgb rgbd | 29.34 |
ROSAT Wide Field Camera (WFC) All-Sky Survey:
| Detection Number | RA (2000.0) | DE (2000.0) | S1 Count Rate | S2 Count Rate | Significance S1 | Significance S2 | Significance |
| 2RE J2045-312 | 20 45 10.33 | -31 20 00.9 | 0.16 ± 0.01 | 0.12 ± 0.02 | 26.2 | 10 | 28.1 |
ROSAT Wide Field Camera (WFC) Pointed Observations:
| Source | RA (2000.0) | DE (2000.0) | Sequence ID | Count Rate | OAX | Significance | Filter | Observation Date |
| 3 | 20 45 10.69 | - 31 20 09.2 | 200436 w00_s1a | 0.09836 ± 0.01574 | 78.3 | 8.84 | S1 | 1991-04-30T18:00 |
| 1 | 20 45 11.81 | - 31 20 40.6 | 701909 w00_s1a | 0.08937 ± 0.02379 | 96.6 | 6.17 | S1 | 1994-10-16T18:00 |
EUVE All-Sky Survey:
| Detection Number | RA (2000.0) | DE (2000.0) | 58-174 Å Count Rate | 156-234 Å Count Rate | 368-590 Å Count Rate | 519-742 Å Count Rate |
| EUVE J2045-313 | 20 45 08 | -31 20.7 | 0.181 ± 0.026 | 0.074 ± 0.024 |
Joint EUVE-ROSAT Detections:
| Detection Number | RA (2000.0) | DE (2000.0) | 58-174 Å Count Rate |
| EUVE J2045-313 | 20 45 11 | -31 21 18 | 0.16 |
Einstein Imaging Proportional Counter (IPC):
| Detection Number | RA (2000.0) | DE (2000.0) | Sequence ID | Count Rate | Exposure Time | SNR | OAX | Observation Date | Images | Data |
| 2E 2042.1-3131 | 20 45 08.6 | -31 20 17 | 2314 4416 | 2.286 ± 0.058 | 1317.3 | 39 | 0.9 | 1979-10-25 to 1979-10-25 | gif FITS | Events |
Last modified on Tuesday, 28 October 2008. C. Liefke | Impressum