The AsterNym star registry
Theemin
Theemin: the golden star of Eridanus
golden · Eridanus · υ2 Eri
Theemin is a golden star, warmer-toned than our Sun in the constellation Eridanus, one of the stars with a proper name recognised in the IAU Catalog of Star Names. At magnitude 3.81 it is visible to the naked eye under a dark sky.
Most stars in the sky are anonymous points of light. Theemin is not. Some IAU-recognised names are ancient; others were adopted by the IAU only recently. Either way, the star already has a scientific identity, and a dedication attaches a human story to it.
Real star · Personal dedication · Recorded in the AsterNym registry
See what a dedicated page looks like: preview
Theemin at a glance
- Constellation
- Eridanus
- Other name
- υ2 Eri
- Catalogue number
- HIP 21393
- Distance
- ≈ 214 light-years
- Brightness
- Magnitude 3.81 naked-eye
- Star type
- G8III
- Colour
- golden
- Best seen from
- The Southern Hemisphere and lower northern latitudes
- Right ascension
- 04h 35m 33s
- Declination
- −30° 33′ 44″
J2000 catalogue coordinates that can be independently cross-checked against astronomical databases. A planetarium app showing coordinates of date will differ slightly, because proper motion and precession move a star’s apparent position over time.
What kind of star is Theemin?
Theemin is a yellow giant. Its surface runs about 5,500°C, near enough the Sun's own surface temperature. Colour in a star is a temperature reading rather than a decoration: the hot ones are blue and the cool ones red, the opposite way round to a kitchen tap.
Its colour is not the whole story. A yellow star still in the steady part of its life would burn for about ten thousand million years. This one is past that stage, and it is cool at the surface because it has swollen outward, not because it was born this way.
It is a giant, which is what a star becomes when it exhausts the hydrogen in its core. It has swollen outward and cooled at the surface, and it is now brighter than it ever was as a young star. The Sun will do this too, in about five thousand million years.
Theemin drifts about 5.1 arcseconds a century against the stars behind it. Slow by any human measure, and still enough that the sky your distant descendants see will not be the one in your photographs.
The light you are looking at is old
The light arriving from Theemin tonight left in about 1812, some 214 years ago. Everything that has happened since, every person you have heard of from the last few centuries, happened while it was in transit.
That delay is the part people find hardest and like most. A star is the one thing you can give someone that was already old before either of you was born and will outlast anything else you could have chosen.
It is comfortably visible without equipment on a decent night.
What does the name Theemin mean?
Subsequently, its etymology was incorrectly derived from Hebrew תאומים (te'omim), meaning "twins," producing Theemin'.
Name origin from English Wikipedia. AsterNym does not invent an etymology where none is recorded, and most stars in this catalogue have none: they carry modern names, or a catalogue designation and nothing older.
What could a Theemin dedication represent?
Theemin is especially meaningful for someone who:
- · Deserves something older than any gift shop
- · Marks a beginning, an anniversary or a promise
- · Is remembered every time you look up
- · Has a light you want recorded somewhere permanent
Dedication idea
“For the one I think of when I find Eridanus in the sky.”
Where can you see Theemin?
It is easy to see from much of the Southern Hemisphere. It can also appear from lower northern latitudes, but it never rises for observers north of about latitude 59°N. It passes directly overhead at latitude 31°S. It stands highest at midnight in November, so November and December evenings are the best time to look. At magnitude 3.81 it is a naked-eye star only under a dark sky, binoculars make it certain.
Theemin belongs to Eridanus.
What does Theemin mean in astrology?
The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Theemin, and we don’t invent lore where none exists. What astrology can still read is the star’s real position, below.
Projected onto the zodiac the way fixed-star astrology reads any star, Theemin stands at 29° Taurus at the J2000 epoch, and the Sun passes that degree around 20 May in the years around 2000. Fixed-star longitude shifts slowly against the tropical zodiac because of precession, about one degree every seventy-two years, so a natal conjunction must be calculated for the birth year rather than read off this J2000 value or a calendar date.
Traditional interpretations, not facts or predictions. The position and dates are computed.
Dedicate Theemin to someone who matters
A flower fades. A card is eventually put away. A star gives your message a place in the sky.
from$29.95a year
Dedicate Theemin →Real star · your message · a page to share
Your Theemin dedication includes
- Your chosen dedication name
- Your personal message
- Theemin's real astronomical coordinates
- A shareable dedication page
- Its location on the AsterNym Galaxy Map
- An optional printable certificate and gift presentation
Theemin keeps its established astronomical name. Your dedication is a personal commemorative record within the AsterNym registry.
Frequently asked questions about Theemin
- What does Theemin mean in astrology?
- The classical fixed-star tradition has no documented meaning for Theemin. Projected onto the zodiac, Theemin stands at 29° Taurus, and the Sun passes that degree each year around 20 May.
- Is Theemin the brightest star?
- Theemin shines at magnitude 3.81 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
- How far away is Theemin?
- Theemin is approximately 214 light-years from Earth. The light reaching us tonight began its journey around 214 years ago.
- Which constellation contains Theemin?
- Theemin is part of Eridanus.
- Can everyone see Theemin?
- It is easy to see from much of the Southern Hemisphere. It can also appear from lower northern latitudes, but it never rises for observers north of about latitude 59°N. It passes directly overhead at latitude 31°S. It stands highest at midnight in November, so November and December evenings are the best time to look. At magnitude 3.81 it is a naked-eye star only under a dark sky, binoculars make it certain.
- Is dedicating Theemin an official astronomical renaming?
- No. Theemin keeps its internationally recognised astronomical name. An AsterNym dedication records your personal name and message in the AsterNym registry without changing the star's scientific identity.
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