NEXXUS 2 - The database for Nearby X-ray and extreme UV emitting Stars
Star Page - NS 1655-0820 D GJ 643 LHS 427 HIP 82809 LTT 6750
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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 | U | B | V | Rc | Ic | J | Ks | H | Distance [ pc ] |
| 16 55 25.27 | -08 19 21.43 | 1.21 | 222.3 | 21.8 | M3.5 | 14.81 | 13.4 | 11.7 | 10.55 | 9.01 | 7.54 | 6.99 | 6.74 | 6.45 |
ROSAT All-Sky Survey (RASS):
| Detection Number | Count Rate | Background | Exposure Time | Likelihood | HR1 | HR2 | log Lx |
| 1RXS J165529.3-082008 | 3.968 ± 0.2449 | 0.00068 | 445 | 906 | -0.26 ± 0.05 | 0.17 ± 0.1 | 29.07 |
ROSAT High Resolution Imager (HRI):
| Detection Number | Sequence Id | Count Rate | SNR | OAX | Exposure Time | Observation Date | Images | log Lx |
| 1RXH J165527.2-081925 | 201921 n00.002 | 0.00503 ± 0.00079 | 2.8 | 2 | 10750 | 1995-08-21 to 1995-08-26 | rgb rgbd | 26.78 |
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 J1655-081 | 16 55 30.29 | -08 19 36.1 | 0.07 ± 0.01 | 0.12 ± 0.01 | 14.9 | 15.2 | 21.3 |
ROSAT Wide Field Camera (WFC) Pointed Observations:
| Source | RA (2000.0) | DE (2000.0) | Sequence ID | Count Rate | OAX | Significance | Filter | Observation Date |
| 2 | 16 55 30.41 | + 08 20 10.9 | 201921 w00_s1a | 0.0862 ± 0.01688 | 0.4 | 8.88 | S1 | 1995-08-21T18:00 |
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 J1655-083 | 16 55 26 | -08 20.0 | 0.131 ± 0.019 | 0.035 ± 0.015 |
Joint EUVE-ROSAT Detections:
| Detection Number | RA (2000.0) | DE (2000.0) | 58-174 Å Count Rate |
| EUVE J1655-083 | 16 55 29 | -08 20 02 | 0.13 |
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 1652.8-0815 | 16 55 30.0 | -08 19 59 | 3112 3783 | 0.78 ± 0.028 | 2078 | 27.7 | 0.5 | 1979-02-28 to 1979-02-28 | gif FITS | Events |
Last modified on Tuesday, 28 October 2008. C. Liefke | Impressum