1 Monocerotis — Variable Star in Monoceros
Good (55/100)
Observe
1Physical Properties
Magnitude
6.12
Range
5.94 - 6.31
Period
3.3 hours
Variable Type
High Amplitude Delta Scuti
Spectral Type
F2IV
subgiant
Star Color
Yellow-white
(B-V 0.29)
2Position & Identifiers
RA
05h 59m 01.0s
Dec
-09° 22' 56.0"
Constellation
Monoceros
(Mon)
HR
2107
HIP
28321
HD
40535
SAO
132714
Flamsteed
1 Mon
Variable ID
V474 Mon
Querying VizieR catalog...
3How easy to follow?
Magnitude
5.9 – 6.4 mag
Amplitude
0.4 mag
Period
3.3 h
Type
HADS
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard | V. hard | Imp. |
| 50 mm finder 50mm finder | Hard+ | Hard+ | Hard+ |
| 150 mm telescope 150mm scope | Hard+ | Hard+ | Hard+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Out of reach for typical amateur telescopes, even at Bortle 3.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Nov – Jan
(peak: Dec)
5Survey Image
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6Light Curve
7Comparison Stars for 1 Mon (5.9–6.4)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
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16Stellar Notes
Delta Sct 5.93 - 6.36V, amp. 0.38 B, 0.13372, 0.13612 and 0.08261d; amp. var. in 7.7455d. Multiple periods.
15.492d.
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
3 Mon
Tight double — a rewarding split at 2.0″
Double Star
mag 4.95
1.4°
Monoceros
V1031 Ori
Eclipsing binary, period 3.4d
Variable Star
mag 6.03
3.1°
Orion
NGC 2182
Reflection nebula around a bright star
Reflection Nebula
mag 9.00
4.0°
Monoceros
NGC 2215
Open cluster
Open Cluster
mag 8.4
5.8°
Monoceros
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Monoceros
Mythology, bright stars, and deep-sky highlights.
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