79 Cancri

Short description: G-type star in the constellation Cancer

79 Cancri  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Cancer
Right ascension |  09h 10m 20.85841s[1]
Declination | +21° 59′ 47.1000″[1]
Apparent magnitude (V) | 6.04[2]
Characteristics
Evolutionary stage | giant
Spectral type | G5 III[3]
B−V color index | 0.871[4]
Astrometry
Radial velocity (Rv)| −3.24±0.13[1] km/s
Proper motion (μ)|  RA: +2.933[1] mas/yr
Dec.: +5.027[1] mas/yr
Parallax (π)| 8.1569 ± 0.0676[1] mas
Distance| 400 ± 3 ly
(123 ± 1 pc)
Absolute magnitude (MV)| 0.78[2]
Details
Mass| 2.30[4] M☉
Radius| 9.41+0.38
−0.57[1] R☉
Luminosity| 57.6±0.6[1] L☉
Surface gravity (log g)| 2.88[5] cgs
Temperature| 5,076±47[4] K
Metallicity [Fe/H]| −0.10[5] dex
Age| 770[4] Myr
Other designations

79 Cnc, BD+22°2063, GC 12655, HD 78715, HIP 45033, HR 3640, SAO 80674, WDS 09103+2200[6]

Database references
SIMBAD| data

79 Cancri is a star in the constellation Cancer, located 400 light years from the Sun.[1] It is just visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 6.04.[2] This object is gradually moving slower to the Earth with a heliocentric radial velocity of −3.2 km/s.[1]

This is an aging giant star with a stellar classification of G5 III,[3] which indicates that, at the age of 770[4] million years, it has exhausted the hydrogen at its core and evolved away from the main sequence. The star has 2.30[4] times the mass of the Sun and has expanded to 9.4[1] times the Sun's radius. It is radiating 58[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,076 K.[4]

## References

1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
2. ↑ 2.0 2.1 2.2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
3. ↑ 3.0 3.1 Cowley, A. P.; Bidelman, W. P. (February 1979), "MK spectral types for some F and G stars", Publications of the Astronomical Society of the Pacific 91: 83–86, doi:10.1086/130446, Bibcode: 1979PASP...91...83C.
4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal 150 (3): 88, doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
5. ↑ 5.0 5.1 Liu, Y. J. et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal 785 (2): 12, doi:10.1088/0004-637X/785/2/94, 94, Bibcode: 2014ApJ...785...94L.
6. ↑ "78 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=78+Cnc.

* v
* t
* e

Cancer constellation

Stars (list)|

| Bayer|

* α (Acubens)
* β (Tarf)
* γ (Asellus Borealis)
* δ (Asellus Australis)
* ε (Meleph)
* ζ (Tegmine)
* η
* θ
* ι
* κ
* λ (Piautos)
* μ1
* μ2
* ν
* ξ (Nahn)
* ο1
* ο2
* π1
* π2
* ρ1 (Copernicus)
* 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 (d1)
* 21
* 24
* 25 (d2)
* 27
* 28
* 29
* 34
* 35
* 36 (c)
* 37
* 38
* 39
* 40
* 42
* 44
* 45 (A1)
* 46
* 49 (b)
* 50 (A2)
* 52
* 53
* 54
* 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
* HIP 41378
* LHS 2090
* PSR B0823+26
* RX J0806.3+1527
* YBP 1194
* WDJ0914+1914

Star clusters|

| Open|

* Beehive Cluster
* Messier 67
* NGC 2664
* NGC 2678

|

Nebulae|

| Planetary|

* Abell 30

|

Galaxies|

| NGC|

* 2503
* 2507
* 2512
* 2513
* 2514
* 2522
* 2526
* 2530
* 2535
* 2536
* 2540
* 2545
* 2553
* 2554
* 2556
* 2557
* 2558
* 2560
* 2562
* 2563
* 2565
* 2569
* 2570
* 2572
* 2575
* 2576
* 2577
* 2581
* 2582
* 2592
* 2593
* 2594
* 2595
* 2596
* 2598
* 2599
* 2604
* 2604B
* 2607
* 2608
* 2611
* 2619
* 2620
* 2621
* 2622
* 2623
* 2624
* 2625
* 2628
* 2647
* 2648
* 2651
* 2657
* 2661
* 2667
* 2672
* 2673
* 2677
* 2679
* 2680
* 2711
* 2720
* 2725
* 2728
* 2730
* 2731
* 2734
* 2735
* 2735A
* 2737
* 2738
* 2741
* 2743
* 2744
* 2744A
* 2745
* 2747
* 2749
* 2750
* 2751
* 2752
* 2753
* 2761
* 2764
* 2766
* 2773
* 2774
* 2775
* 2777
* 2783
* 2783B
* 2786
* 2789
* 2790
* 2791
* 2794
* 2795
* 2796
* 2797
* 2801
* 2802
* 2803
* 2804
* 2807
* 2807A
* 2809
* 2812
* 2813
* 2819
* 2824
* 2843

|

Other|

* B2 0827+243
* 3C 190
* 3C 191
* 3C 192
* 3C 207
* 3C 212
* 3C 215
* 4C +29.30
* Mrk 704
* OI 090.4
* OJ 287
* QSO B0820+225
* QSO B0839+187

Galaxy
clusters|

* Abell 671
* Cancer Cluster
* Musket Ball Cluster

Other|

* GRB 021211
* SN 1999aa
* SN 2002lt

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