User:Aidan9382/sandbox

Sirius
	Location of Sirius (circled)
Observation data; Epoch J2000.0 Equinox ICRS
Constellation	Canis Major
Pronunciation	/ˈsɪriəs/
	Sirius A
Right ascension	06h 45m 08.917s
Declination	−16° 42′ 58.02″
Apparent magnitude (V)	−1.46
	Sirius B
Right ascension	06h 45m 09.0s
Declination	−16° 43′ 06″
Apparent magnitude (V)	8.44
Characteristics
Sirius A
Evolutionary stage	Main sequence
Spectral type	A0mA1 Va
U−B colour index	−0.05
B−V colour index	+0.00
Sirius B
Evolutionary stage	White dwarf
Spectral type	DA2
U−B colour index	−1.04
B−V colour index	−0.03
Astrometry
Radial velocity (Rv)	−5.50 km/s
Sirius A
Proper motion (μ)	RA: −546.01 mas/yr ; Dec.: −1,223.07 mas/yr
Parallax (π)	379.21 ± 1.58 mas
Distance	8.60 ± 0.04 ly ; (2.64 ± 0.01 pc)
Absolute magnitude (MV)	+1.43
Sirius B
Proper motion (μ)	RA: −461.571 mas/yr ; Dec.: −914.520 mas/yr
Parallax (π)	374.4896 ± 0.2313 mas
Distance	8.709 ± 0.005 ly ; (2.670 ± 0.002 pc)
Absolute magnitude (MV)	+11.18
Orbit
Primary	α Canis Majoris A
Companion	α Canis Majoris B
Period (P)	50.1284 ± 0.0043 yr
Semi-major axis (a)	7.4957 ± 0.0025″
Eccentricity (e)	0.59142 ± 0.00037
Inclination (i)	136.336 ± 0.040°
Longitude of the node (Ω)	45.400 ± 0.071°
Periastron epoch (T)	1,994.5715 ± 0.0058
Argument of periastron (ω); (secondary)	149.161 ± 0.075°
Details
Sirius A
Mass	2.063±0.023 M☉
Radius	1.711 R☉
Luminosity	25.4 L☉
Surface gravity (log g)	4.33 cgs
Temperature	9,940 K
Metallicity [Fe/H]	0.50 dex
Rotational velocity (v sin i)	16 km/s
Age	242±5 Myr
Sirius B
Mass	1.018 ± 0.011 M☉
Radius	0.0084 ± 3% R☉
Luminosity	0.056 L☉
Surface gravity (log g)	8.57 cgs
Temperature	25,000 ± 200 K
Age	228+10; −8 Myr
Other designations
	Dog Star, Aschere, Canicula, Al Shira, Sothis, Alhabor,Mrgavyadha, Lubdhaka, Tenrōsei, α Canis Majoris (α CMa), 9 Canis Majoris (9 CMa), HD 48915, HR 2491, BD−16°1591, GJ 244, LHS 219, ADS 5423, LTT 2638, HIP 32349
	Sirius B: EGGR 49, WD 0642-166, GCTP 1577.00
Database references
	A
	B

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Sandboxes:

sandbox 1, sandbox 2.1 and sandbox 3, when one just doesn't cut it
sandboxjson for unique pagetype testing
sandboxmessy - the literal sandbox
SafeEnvironmentTesting - somewhat defunct sandbox, still sometimes used for certain tests
Module:Sandbox/Aidan9382 - module coding

Any linter errors here are likely intentional as part of testing. Do not fix them

Bunch of broken references

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Observation data Epoch J2000.0 Equinox ICRS
Location of Sirius (circled)
Constellation	Canis Major
Pronunciation	/ˈsɪriəs/^[1]
Sirius A
Right ascension	06^h 45^m 08.917^s^[2]
Declination	−16° 42′ 58.02″^[2]
Apparent magnitude (V)	−1.46^[3]
Sirius B
Right ascension	06^h 45^m 09.0^s^[4]
Declination	−16° 43′ 06″^[4]
Apparent magnitude (V)	8.44^[5]
Characteristics
Sirius A
Evolutionary stage	Main sequence
Spectral type	A0mA1 Va^[6]
U−B colour index	−0.05^[3]
B−V colour index	+0.00^[3]
Sirius B
Evolutionary stage	White dwarf
Spectral type	DA2^[5]
U−B colour index	−1.04^[7]
B−V colour index	−0.03^[7]
Astrometry

Radial velocity (R_v)	−5.50^[8] km/s


Sirius A
Proper motion (μ)	RA: −546.01 mas/yr^[9] Dec.: −1,223.07 mas/yr^[9]
Parallax (π)	379.21 ± 1.58 mas^[9]
Distance	8.60 ± 0.04 ly (2.64 ± 0.01 pc)
Absolute magnitude (M_V)	+1.43^[10]


Sirius B
Proper motion (μ)	RA: −461.571 mas/yr^[11] Dec.: −914.520 mas/yr^[11]
Parallax (π)	374.4896 ± 0.2313 mas^[11]
Distance	8.709 ± 0.005 ly (2.670 ± 0.002 pc)
Absolute magnitude (M_V)	+11.18^[7]

Orbit^[12]
Primary	α Canis Majoris A
Companion	α Canis Majoris B
Period (P)	50.1284 ± 0.0043 yr
Semi-major axis (a)	7.4957 ± 0.0025″
Eccentricity (e)	0.59142 ± 0.00037
Inclination (i)	136.336 ± 0.040°
Longitude of the node (Ω)	45.400 ± 0.071°
Periastron epoch (T)	1,994.5715 ± 0.0058
Argument of periastron (ω) (secondary)	149.161 ± 0.075°
Details
Sirius A
Mass	2.063±0.023^[12] `M`_☉
Radius	1.711^[13] `R`_☉
Luminosity	25.4^[13] `L`_☉
Surface gravity (log g)	4.33^[14] cgs
Temperature	9,940^[14] K
Metallicity [Fe/H]	0.50^[15] dex
Rotational velocity (v sin i)	16^[16] km/s
Age	242±5^[12] Myr
Sirius B
Mass	1.018 ± 0.011^[12] `M`_☉
Radius	0.0084 ± 3%^[17] `R`_☉
Luminosity	0.056^[18] `L`_☉
Surface gravity (log g)	8.57^[17] cgs
Temperature	25,000 ± 200^[13] K
Age	228+10 −8^[12] Myr
Other designations
Dog Star, Aschere, Canicula, Al Shira, Sothis,^[19] Alhabor,^[20]Mrgavyadha, Lubdhaka,^[21] Tenrōsei,^[22] $α$ Canis Majoris ( $α$ CMa), 9 Canis Majoris (9 CMa), HD 48915, HR 2491, BD−16°1591, GJ 244, LHS 219, ADS 5423, LTT 2638, HIP 32349^[23]
Sirius B: EGGR 49, WD 0642-166, GCTP 1577.00^[24]
Database references
	A
	B