4 Cancri

For other stars with this Bayer designation, see Omega Cancri.

4 Cancri
Observation data Epoch J2000 Equinox J2000
Constellation	Cancer
Right ascension	08^h 01^m 43.75692^s^[1]
Declination	+25° 05′ 22.0800″^[1]
Characteristics
Spectral type	A1V^[1]
Astrometry

Radial velocity (R_v)	−9.2 ± 2^[1] km/s
Proper motion (μ)	RA: −25.11 mas/yr Dec.: 12.29 mas/yr
Parallax (π)	6.85 ± 0.35 mas
Distance	480 ± 20 ly (146 ± 7 pc)

Other designations
ω² Cancri (Bayer), 4 Cancri (Flamsteed), BD+25 1816, CCDM J08017+2506A, GSC 01930-00674, HD 65856, HIC 39263, HIP 39263, HR 3132, SAO 79869

4 Cancri (4 Cnc), also known by its Bayer designation of Omega² Cancri (ω² Cancri, ω² Cnc), is an A-type main-sequence star in the constellation Cancer. It is approximately 480 light years from Earth, and has an apparent magnitude of 6.32.

References

Bayer	α (Acubens / Sertan) β (Tarf) γ (Asellus Borealis) δ (Asellus Australis) ε ζ (Tegmine) η θ ι κ λ μ¹ μ² ν ξ ο¹ ο² π¹ π² ρ¹ ρ² σ¹ σ² σ³ τ υ¹ υ² φ¹ φ² χ ψ¹ ψ² ω¹

Flamsteed	1 3 4 (ω²) 5 7 8 11 12 15 20 21 24 25 27 28 29 34 35 36 37 38 39 40 42 44 45 46 49 50 52 53 54 55 (ρ¹) 57 60 61 66 67 68 70 71 75 78 79 80 83 1 LMi 2 LMi 3 LMi 4 LMi

Variable	R S T U V X RS RU RX RZ SS SY TT TU TW TX UU VZ WY YZ AC AD AH AK AR AT AZ BN BQ BR BS BU BW BX CC CU CY DW DX EG EP ES EV EW EX FZ GY HU HV

HR	3104 3115 3125 3127 3158 3164 3198 3201 3222 3228 3231 3252 3264 3306 3376 3380 3394 3395 3424 3428 3504 3558 3567 3599 3606 3617 3620 3635 3657 3689 3707

HD	67542 69629 72115 73534 74721 76908 79498

Other	ADS 7284 G 9-38 HAT-P-31 LHS 2090 PSR B0823+26 RX J0806.3+1527 YBP 1194

Open	Beehive Cluster Messier 67 NGC 2664 NGC 2678

Planetary	Abell 30

Other

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