30 Piscium
30 Piscium (HIP 154) is a solitary variable star in the zodiac constellation of Pisces. It is visible to the naked eye with an apparent visual magnitude of 4.37. Its calculated mid-value of antiposed parallax shift as the earth moves around the sun of very roughly , makes it around 410 light years away. Its net movement in the present epoch is one of moving closer – radial velocity (speed away from our star system) is −12 km/s.

This is an aging red giant star with a stellar classification of M3 III, indicating it has exhausted the hydrogen at its core and evolved off the main sequence. It is a candidate long-period variable star and has been given the designation YY Psc. Its varieay in brightness between magnitudes 4.31 and 4.41 with no clear period. Possible periods of 23.1, 32.0, 53.6, and 167.8 days have been identified. The star has 74 times the Sun's radius and is radiating 1,148.5 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,647 K.
None
HIP
UNK
Q6243
variable star
Concept
Q40540
zodiac
Concept
Q8928
constellation
Concept
Q8679
Pisces
CEL
Q124313
apparent visual magnitude
Concept
Q906561
parallax shift
Concept
Q531
light year
Concept
Q240105
radial velocity
Concept
Q50081
red giant
Concept
Q25377588
stellar classification
Concept
Q6472
evolved
Concept
Q3450
main sequence
Concept
Q1153690
long-period variable star
CEL
Q593448
designation
Concept
Q2028919
magnitudes
Concept
Q48440
Sun's radius
Concept
Q843877
luminosity of the Sun
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q4634521
30 Piscium
CEL
+30^^http://www.w3.org/2001/XMLSchema#decimal
30
NUMBER
+4.37^^http://www.w3.org/2001/XMLSchema#decimal
4.37
NUMBER
+12^^http://www.w3.org/2001/XMLSchema#decimal
12
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+4.31^^http://www.w3.org/2001/XMLSchema#decimal
4.31
NUMBER
+4.41^^http://www.w3.org/2001/XMLSchema#decimal
4.41
NUMBER
+23.1^^http://www.w3.org/2001/XMLSchema#decimal
23.1
NUMBER
+32.0^^http://www.w3.org/2001/XMLSchema#decimal
32.0
NUMBER
+53.6^^http://www.w3.org/2001/XMLSchema#decimal
53.6
NUMBER
+167.8^^http://www.w3.org/2001/XMLSchema#decimal
167.8
NUMBER
+74^^http://www.w3.org/2001/XMLSchema#decimal
74
NUMBER
+1148.5^^http://www.w3.org/2001/XMLSchema#decimal
1,148.5
NUMBER
constellation
apparent magnitude
instance of