Double Star 10084+1158 Observation Details
10084+1158 Daily Motion
Tonight, observing 10084+1158 may prove challenging owing to its low elevation. It will reach its transit at by 09:44 and set before sunset at 16:20. Rising near twilight's end at 03:04, it will fade away by 03:52, peaking at just 9° above the horizon.10084+1158 will become visible in October, 6. After being too close to the Sun to observe, it will reappear in the night sky. Starting from October, 6, 10084+1158 can be seen again, providing a good opportunity for observation.
10084+1158 Visibility Timetable on September 14
10084+1158 Rise and Set Timetable
| Time | Elevation | |
| 10084+1158 transit | 09:44 | 65° |
| 10084+1158 set | 16:20 | |
| Astrosession begin | 18:46 | -26° |
| Moon Rise, 52.2% illuminated | 21:08 | -40° |
| 10084+1158 rise | 03:04 | |
| Astrosession end | 03:20 | 3° |
| Civil sunrise | 04:23 | 16° |
| Sunrise | 04:50 | 21° |
| Moon Set | 13:03 | 38° |
Track 10084+1158 Position Throughout the Night
← Sun, 14 September 2025 →
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Where is 10084+1158 right now?
10084+1158 is located in the constellation Leo, at right ascension 10h 08m 22s" and declination 11° 58' 01s. Although it is currently above the horizon at an altitude of 43 degrees, 10084+1158 is not visible because it is daytime.10084+1158 Star System Description
10084+1158 is 5-star Star System located in constellation Leo at coordinates RA: 10h 08m 22s", Dec: 11° 58' 01s.
The primary component has a magnitude of 1.40, while the secondary component has a magnitude of 8.24. They are separated by 2.8 arcminutes at a position angle of 307 degrees. The brightness difference between the two components is 6.84 magnitudes, with the primary component being approximately 544.5 times brighter than the secondary.
Below is a table with star system details from the Washington Double Star (WDS) Catalog. This catalog is a comprehensive source of information on double and multiple star systems, providing key data on the positions, magnitudes, and separations of stellar components.
T: Statistically the same parallax within the errors and similar proper motion or other technique indicates that this pair is physical.
The primary component has a magnitude of 1.40, while the secondary component has a magnitude of 8.24. They are separated by 2.8 arcminutes at a position angle of 307 degrees. The brightness difference between the two components is 6.84 magnitudes, with the primary component being approximately 544.5 times brighter than the secondary.
Below is a table with star system details from the Washington Double Star (WDS) Catalog. This catalog is a comprehensive source of information on double and multiple star systems, providing key data on the positions, magnitudes, and separations of stellar components.
Technical Details of Star System 10084+1158
| Property | Value |
|---|---|
| Star System Identifier | 10084+1158 |
| System Type | 5-star Star System |
| Primary Star | alp Leo |
| Right Ascension (RA) | 10.13953 (10h 08m 22s") |
| Declination (Dec) | 11.96719 (11° 58' 01s) |
| Magnitude (Primary) | 1.40 |
| Magnitude (Secondary) | 8.24 |
| Spectral Type (Primary/Secondary) | B7V |
| Separation (Arcseconds) | 168.3 |
| Position Angle | 307° |
| Discovery Year | 1779 |
| Last Observed | 2023 |
| Primary Proper Motion (Ra, Dec) | -249+006 |
| Secondary Proper Motion (Ra, Dec) | -254+008 |
| Number of Observations | 69 |
10084+1158 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 8.24 | 168.3 | 307 |
| AD | 12.10 | 217.0 | 274 |
| BC | 13.2 | 4.0 | 89 |
| BD | 12.10 | 120.7 | 221 |
Notes
The data presented in this table is sourced from the Washington Double Star (WDS) Catalog, a comprehensive repository of double and multiple star system information maintained by the U.S. Naval Observatory. We thank the WDS team for their continued efforts in providing accurate and detailed astronomical data.
Finder Chart for alp Leo
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| Object name | 10084+1158 |
| Field of view | |
| Limiting magnitude | |
| 10084+1158 coordinates | 10.13953, 11.96719 |
| Center coordinates | 10.13953, 11.96719 |
10084+1158 Passage Through Night
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Current position of 10084+1158
| Time | 06:47 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 10084+1158 elevation | 43° |
| 10084+1158 Azimuth | -111° |
Here you can see the current position of the 10084+1158 on the map, as well as its positions for rise and set. This tool allows you to track the 10084+1158's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 10084+1158
| Date | Sun, 14 September 2025 |
| Twighlight start | 18:42 |
| Twighlight end | 03:14 |
| Twighlight duration | 9h 32m |
| Rise | 03:04 |
| Set | 16:16 |
| Elevation at transit | 65° |
| Transit time | 09:40 |
| Equatorial coordinates | RA: 10h 08m 22s", Dec: 11° 58' 01s |
| Magnitude | 1 |
| Constellation | Leo |
The graph illustrates the annual visibility pattern of a 10084+1158, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the 10084+1158 is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the 10084+1158 is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
Astrometric & Physical Parameters of 10084+1158
Coordinates & Visibility
| Right Ascension | 10.13953° |
| Declination | 11.96719° |
| Magnitude | 1.40 |
| Constellation | Leo |
| Elevation | 43° |
| Azimuth | -110.8° |