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SDSS J114816.64+525150.3
SDSS J114816.64+525150.3 captured by Two Micron All Sky Survey
Observation data (Epoch )
Constellation	Ursa Major
Right ascension	11 48 16.64
Declination	52° 51′ 50.3″
Redshift	6.419
Apparent magnitude (V)	25.53
See also: Quasar, List of quasars

SDSS J114816.64+525150.3 (J1148+5251) was the most distant known quasar when it was discovered in 2003, at redshift Z=6.419. The quasar is powered by a 3x10 solar mass supermassive black hole.

Imaging with amateur-grade telescope

The Virtual Telescope Project imaged the quasar between March and April 2024, with a 350-millimeter (14 in) Celestron Schmidt–Cassegrain telescope, on a Software Bisque Paramount ME robotic mount. A total of 81, 300-second exposures were combined, for a total of almost 7 hours of exposure, recording sources as faint as about magnitude R=25. The team termed it "the most distant quasar observable at visible wavelengths".

See also

• List of the most distant astronomical objects

References

1. Sloan Digital Sky Survey
2. Bertoldi et al. 2003.
3. Willott, McLure & Jarvis 2003.
4. Masi 2024.

Sources

• Bertoldi, F.; Cox, P.; Neri, R.; Carilli, C.L.; Walter, F.; Omont, A.; Beelen, A.; Henkel, C.; Fan, X.; Strauss, Michael A.; Menten, K.M. (2003), "High-excitation CO in a quasar host galaxy at z=6.42", Astron. Astrophys., 409: L47–L50, arXiv:astro-ph/0307408, Bibcode:2003A&A...409L..47B, doi:10.1051/0004-6361:20031345, We report the detection of high excitation CO emission from the most distant quasar currently known, SDSS J114816.64+525150.3 ...
• Willott, Chris J.; McLure, Ross J.; Jarvis, Matt J. (April 2003), "A 3×109 Msolar Black Hole in the Quasar SDSS J1148+5251 at z=6.41", The Astrophysical Journal, 587 (1): L15–L18, doi:10.1086/375126
• Masi, Gianluca (April 15, 2024), The Virtual Telescope Project makes a record setting observation at the edge of the Universe.

External links

• Williams, Matt (March 16, 2024). "Little Red Dots in Webb Photos Turned Out to Be Quasars". Universe Today.

v t e Constellation of Ursa Major
Stars	Bayer α (Dubhe) β (Merak) γ (Phecda) δ (Megrez) ε (Alioth) ζ (Mizar) η (Alkaid) θ ι (Talitha) κ (Alkaphrah) λ (Tania Borealis) μ (Tania Australis) ν (Alula Borealis) ξ (Alula Australis) ο (Muscida) π π ρ σ σ τ υ φ χ (Taiyangshou) ψ ω Flamsteed 2 (A) 5 (b) 6 15 (f) 16 (c) 17 18 (e) 19 20 21 22 23 (h) 24 (d) 26 27 28 31 32 35 36 37 38 39 40 41 42 43 44 46 47 (Chalawan) 49 51 55 56 57 58 59 60 61 62 65 66 67 68 70 71 72 73 74 75 76 78 80 (Alcor) 81 82 83 84 86 55 Cam 56 Cam 57 Cam 1 CVn 14 LMi 15 LMi 25 LMi 47 LMi 37 Lyn 39 Lyn 41 Lyn (Intercrus) Variable R T U W Z RV ST SU SW SX TU TX TY UX UY VV VX VY XY ZZ AA AB AE AN AR AW BC BE BM BZ CG CH CO CQ CY DH DI DM DV DW EE EG EI EK EN EP ER ET EU EV EZ IY KS HR 3922 4067 4098 4132 4867 5148 HD 68988 (Násti) 74389 80606 80607 84406 98618 99706 118203 (Liesma) 233731 Other ADS 7251 Feige 55 G 196-3 Gliese 338 Gliese 412 Gliese 414 GJ 3512 Groombridge 1618 Groombridge 1830 HAT-P-3 (Dombay) HAT-P-13 HAT-P-21 (Mazaalai) HIP 57050 HIP 57274 1SWASP J093010.78+533859.5 KELT-24 Lalande 21185 M82 X-1 M82 X-2 Qatar-8 Sidus Ludoviciana SN H0pe UGC 5497 US 708 Winnecke 4 WISE 1405+5534 XTE J1118+480
Exoplanets 47 Ursae Majoris b (Taphao Thong) c (Taphao Kaew) d ο Ursae Majoris b 41 Lyncis b (Arkas) Gliese 414 Ab c HAT-P-3b (Teberda) HD 80606 b HD 89744 b KELT-24b
Nebulae Owl Nebula
Galaxies	Messier 81 (Bode's Galaxy) 82 (Cigar Galaxy) 101 (Pinwheel Galaxy) 108 109 NGC 2603 2606 2681 2685 2688 2768 2787 2800 2805 2814 2841 2857 2950 2959 2976 2985 2998 3005 3006 3008 3009 3073 3077 3079 3184 3191 3198 3206 3259 3310 3319 3353 3359 3435 3445 3448 3516 3539 3545B 3550 3552 3553 3554 3358 3561 3583 3610 3613 3619 3631 3642 3656 3665 3669 3675 3690 3718 3726 3729 3738 3741 3786 3794 3877 3893 3898 3921 3928 3938 3941 3945 3949 3953 3972 3982 3985 3994 3995 3998 4013 4026 4036 4041 4051 4088 4096 4100 4102 4144 4157 4194 4500 4605 5001 5164 5201 5204 5256 5278 5279 5308 5322 5422 5473 5474 5477 5486 5502 5585 Other 2MASX J10222849+5006200 3C 219 3C 244.1 3C 268.3 CEERS-2112 Haro 2 Holmberg IX I Zwicky 18 IC 923 IC 2574 IRAS F11119+3257 Markarian 231 Markarian 273 Markarian 421 Mayall's Object SBS 0953+549 SDSS J1148+5251 UGC 4879 UGC 5101 UGC 6945 UGC 8335 UGC 8508 Ursa Major III
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