سوال رصدی! - نسخه قابل چاپ +- تالار گفتگو ستاره‌شناسان (https://www.astrotalk.ir) +-- انجمن: ابزارهای ستاره شناسی (https://www.astrotalk.ir/forumdisplay.php?fid=5) +--- انجمن: تلسکوپ (https://www.astrotalk.ir/forumdisplay.php?fid=36) +--- موضوع: سوال رصدی! (/showthread.php?tid=1459)

سوال رصدی! - astronomer50 - 05-24-2010 سلام لطفا ستاره های دوتایی قابل رصد با تلسکوپ آماتوری رو معرفی بنویسید. البته به جز عناق در دب اکبر ممنون سوال رصدی! - yperseusy - 05-24-2010 به نظرم hip1124 گذينه ي خوبي براي رصد باشه چون يه ستاره ي دور قطبي هستش و همون جور كه ميدونيد هيچ وقت در ايران حد اقل زيره افق نميره اين جرم براي رصد و تحقيق خيلي مناسبه يه سرس اطلاعات از اين جرم برات ميزارم انشالله كه كمك كنه Information about STT 1-hip1124 Summary Visual magnitude: 7.17 Spectral type: M4III: Distance: 935 +/- 137 light years Luminosity: 90.2 +/- 28.4 x Sun's luminosity Position information for 25 اوت 2009 06:31:41 ب.ظ JD: 2455069.27200 Apparent RA: 00h 14m 39.84s Apparent Dec: +76° 4' 48.7" Constellation: Cepheus Altitude: +46° 10' 21" Azimuth: 18° 28' 53" Hour angle: 16h 23m 34s Transit: 2h 10m 48s Comments: The star is circumpolar and never rises or sets Names and Catalog Numbers Tycho catalog number: TYC 4492-2572-1 Hipparcos number: HIP 1124 Henry Draper number: HD 919 DM number: BD +75 0004 PPM number: PPM 4321 SAO number: SAO 4062 WDS designation: STT 1 Star atlas chart numbers Herald-Bobroff Astroatlas: Chart C-20 Millennium Star Atlas: Charts 13-14 (Vol I) Sky Atlas 2000.0: Chart 1 Uranometria 2000: Chart 3, Vol 1 Display Hipparcos record Display Tycho 2 Catalog record Display WDS Catalog record Hipparcos Catalog Data Hipparcos Catalogue (ESA SP-1200, 1997). Hipparcos Identifier/Proximity Flag Catalog number: HIP 1124 Proximity flag: None Descriptor V magnitude: 7.17 Variability: This star entry is variable at a level of 0.06 to 0.6 mag Source of V mag: Median Hipparcos magnitude (Hp), combined with information on the colour index (either V-I or Bt-Vt), in combination with the luminosity class. Main Mission Astrometric Data Equatorial coordinates (epoch J2000.0, ICRS) Right Ascension: 00h 14m 02.6093s Declination: +76° 1' 37.195" Standard errors of the equatorial coordinates (epoch J1991.25) RA: 0.00049 arcsec Dec: 0.00051 arcsec Parallax information Trigonometric parallax: 0.00349 arcsec Standard error of the parallax: 0.00060 arcsec Proper motion components (epoch J1991.25, ICRS) RA: +0.10217 arcsec/yr Dec: +0.00066 arcsec/yr Standard error in RA: 0.00244 arcsec Standard error in Dec: 0.00060 arcsec Miscellaneous astrometric information Radial velocity: -0.7 km/sec Percentage of data rejected (F1): 0% Goodness-of-fit parameter (F2): -0.39 Tycho Photometry and Colour Indices Bt magnitude: 9.310 Standard error in Bt: 0.015 Vt magnitude: 7.392 Standard error in Vt: 0.007 Johnson B-V colour index: 1.626 Standard error: 0.014 Source of B-V value: Determined from the transformed Tycho Bt-Vt data. Cousins' V-I colour index: 2.33 Standard error: 0.04 Source of V-I value: Method O Main Mission Photometry Median magnitude, Hp: 7.2140 Standard error in median magnitude: 0.0031 mag Scatter of Hp observations: 0.024 mag Number of Hp observations: 113 Main Mission Variability Observed magnitude at maximum and minimum luminosities Mag at max, Hp: 7.18 (5th percentile) Mag at min, Hp: 7.25 (95th percentile) Type of variability: Unsolved variable. Entries are classified as "unsolved" if they do not fall into the other variability categories - this class also includes irregular or semi-irregular variables, and possible variables with amplitudes >=0.03 mag. Comments: Variability data for this star, such as periods, amplitudes, reference epochs, etc, compiled from the Hipparcos Hp data, along with associated ground-based data, are given in the table of "unsolved" variables in the Hipparcos Variability Annex. Multiplicity Data CCDM identifier (J2000.0): 00142+7601 Historical status: The system had been previously identified as double or multiple, as given in Annex 1 of the Hipparcos Input Catalog. Number of separate catalog entries: 1 Number of components: 1 Reliability of the solution: Suspected non-single, ie possible double or multiple, although no significant or convincing non-single star solution was found. Miscellaneous Comment: This is a "survey" star. Comment: This entry has the following notes in the printed Hipparcos catalog: Photometric (including variability) note (Volume 11). HD identifier: HD 919 DM identifier: BD +75 0004 V-I colour index: 2.44 mag Spectral type: M4III: Source of spectral type: SIMBAD Return to top Tycho 2 Catalog Data Tycho 2 Catalogue (E.Hog et al., 2000). Basic Information Catalog number: TYC 4492-2572-1 Magnitude: 7.22 (Johnson V mag) B-V colour index: +1.662 mag Equatorial coordinates (epoch J2000.0, ICRS) RA: 00h 14m 02.6086s Dec: +76° 1' 37.169" Proper motion components (epoch J2000.0, ICRS) RA: +0.10146 arcsec/yr Dec: -0.00250 arcsec/yr Parallax and radial velocity information Trigonometric parallax: 0.00349 arcsec Standard error: 0.00060 arcsec Radial velocity: -0.7 km/sec Return to top WDS Catalog Data Washington Double Star Catalog, 2001. (Brian D. Mason, Gary L. Wycoff, William I. Hartkopf, Geoffrey G. Douglass, and Charles E. Worley, Astrometry Department, U.S. Naval Observatory, 3450 Massachusetts Ave, NW, Washington, DC 20392, USA) Discoverer's reference: STT 1 Observer: Struve, O. Number of component records: 1 Component: RA (J2000.0): 00h 14.1m Dec (J2000.0): +76° 1' Number of measurements: 22 Date of first observation: 1875 Position angle: 102° Separation: 77.1" Date of last observation: 1993 Position angle: 105° Separation: 73.3" Magnitude of first component: 7.17 Magnitude of second component: 7.72 Spectrum: M Proper motion in RA: 0.038 "/year Proper motion in dec: -0.007 "/year Catalog number: BD +75 4 Notes: B is BD+75@5. Proper motion of B +002 -007. Comment: This pair appears in an appendix list, and is not a part of the discoverer's regular numbering system. Return to top سوال رصدی! - astronomer50 - 05-25-2010 سلام از کمکتون خیلی ممنون ولی فقط همین..... :oops: لطفا کسی دیگه اطلاع نداره؟؟؟ سوال رصدی! - Sagittarius - 05-25-2010 ببینم کجایی که راه شیری پیداست؟ سوال رصدی! - Sagittarius - 05-25-2010 یه لیست خوب برات مینویسم اطلاعات بیشتر رو خودت سرچ کن پیدا کن سوال رصدی! - astronomer50 - 05-25-2010 سلام خوب شما اگه لطف کنید فقط نام های دوتایی هارو برام بنویسی ، بقیه اطلاعات رو خودم پیدا می کنم ممنون :wink: سوال رصدی! - only orion - 05-25-2010 تعداد دوتایی های قابل مشاهده با تلسکوپ خیلی زیاده.مجله نجوم شماره 180 صفحه ی 145 تعدادی از این دوتایی ها رو داره.برای فصل بهار هم این ها رو نوشته: آلفا تازی ها* 24-گیسو* زتا-اکلیل شمالی* اپسیلون- عوا* مو1 و 2-عوا* آلفا1و 2 -میزان* گاما-اسد سوال رصدی! - Sagittarius - 05-25-2010 1-آلبریو (منقار قو) 2-دلتا کلاغ 3-کسی عوا 4-نو اژدها 5-اپسیلون شلیاق 6-بتا عقرب 7-گاما بره 8-گاما آندرومدا 9 تتا شکارچی سوال رصدی! - astronomer50 - 05-25-2010 سلام ممنون از کمکتون