Scott Sinclair headed home his fifth goal of the season
Celtic moved to within a point of reaching the Europa League knock-out stages with an efficient victory over Rosenborg in Trondheim.
Scott Sinclair headed home the only goal from a sumptuous James Forrest cross three minutes before half-time.
With RB Salzburg beating RB Leipzig to qualify as group winners, Celtic have their destiny in their own hands.
They need a point against the Austrians in their final group game on 13 December to guarantee qualification.
Leipzig - who finish at home to Rosenborg - remain in contention for second spot, but Celtic will fancy their chances of progress after their first Europa League away win - at the 17th attempt - since the competition was rebranded in 2009-10.
Their sixth victory from seven matches - the other a draw - since losing 2-0 to Leipzig on 25 October, gave their swelling confidence a further boost leading into Sunday's League Cup final against Aberdeen at Hampden.
- Reaction and re-live the match as it happened
Rogic return sparks Celtic
Tom Rogic, returning to the Celtic side in place of the benched Olivier Ntcham, looked keen to pick up where he left off before the international break.
The Australian midfielder tired late on but was a prominent figure in a first half-hour which saw the visitors dominate possession but initially fail to make their ascendancy count.
Rogic thumped an effort over before picking up a loose pass, driving into the box and threading a pass through for Odsonne Edouard, but the French striker was slow to react as the hosts cleared the danger.
The half-chances continued to flow. Ryan Christie's snap-shot was deflected wide; Rogic had another shot blocked; Forrest couldn't quite get control of a pin-point cross from Christie.
Rogic then brought an excellent save from Anders Hansen as the Rosenborg keeper got down well to save his low shot.
When the breakthrough arrived, it came in style. The in-form Forrest turned Tore Reginiussen on the right flank and stood up a lovely cross to the far post, where Sinclair headed home emphatically.
Rosenborg, in front of a sparse crowd inside the Lerkendal Stadium, threatened only sporadically as they slumped to a fifth group defeat out of five.
Yann-Erik de Lanlay dispossessed Sinclair on the right and steered a powerful cross across the face of the box that eluded Nicklas Bendtner, the former Arsenal striker playing despite having a 50-day jail term hanging over his head after dropping his appeal against the assault of a taxi driver.
Celtic were also grateful for the intervention of Filip Benkovic in the early moments of the second half, the Croat centre-back reacting quickest to a dangerous cross from Birger Meling.
But while the hosts made it more of an even contest after the interval, the visitors saw out the game in reasonable comfort.
They might have had more goals - Edouard's close-range effort diverted wide before he made way for Leigh Griffiths, who let fly with a dipping shot in stoppage time.
But one ultimately proved enough, setting up an enticing group finale at Celtic Park in a fortnight.
'Celtic played with poise and purpose' - analysis
BBC Scotland's Martin Dowden in Trondheim
Celtic arrived with the kind of poise and purpose that has been lacking in many an away European fixture.
Their movement, awareness and quality of passing were all at a high standard and the tempo was impressive. They dominated the ball and when they lost it were quick to regain possession and attack.
The only criticism you could muster in the first half was the number of chances that passed by before Forrest's exquisite chip gave Sinclair the easiest of finishes.
In truth, Celtic should have been out of sight with the outcome done and dusted long before the closing stages which became ever so slightly nervy.
However, the win was fully deserved and vital for their hopes to qualify. They now have a fabulous opportunity to go further. It is now very much in their hands.
Celtic secured just their third away group stage win in Europe in 45 attemptsMatch stats
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Celtic have only lost one of their 10 all-time meetings with Rosenborg in European competition (W7 D2), keeping six clean sheets in total.
Winger Scott Sinclair scored his first European group-stage goal since September 2017 (v Anderlecht in the Champions League).
Rosenborg failed to register a shot on target in both games against Celtic in the Europa League this season.
The Norwegians have failed to qualify from the group stages in each of their five Europa League campaigns.
They have failed to keep a clean sheet in each of their 29 Europa League games, conceding 59 goals.
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Line-ups
Match Stats
Live Text
Line-ups
Rosenborg
1Hansen
2Hedenstad
16Hovland
4Reginiussen
3Meling
7Jensen
8KonradsenBooked at 37minsSubstituted forDenicat 45+1'minutesBooked at 49mins
15TrondsenSubstituted forVilhjálmssonat 66'minutes
11de Lanlay
9Bendtner
28AdegbenroSubstituted forLeviat 78'minutes
Substitutes
5Denic
10Vilhjálmsson
14Søderlund
17Levi
21Dahl Reitan
24Østbø
26Serbecic
Celtic
1Gordon
23LustigSubstituted forGamboaat 66'minutes
20Boyata
32Benkovic
63Tierney
49ForrestSubstituted forBrownat 77'minutes
42McGregor
18Rogic
11Sinclair
17Christie
22EdouardSubstituted forGriffithsat 66'minutes
Substitutes
4Hendry
8Brown
9Griffiths
12Gamboa
15Hayes
21Ntcham
29Bain
Referee:
Halis Özkahya
Match Stats
Home TeamRosenborgAway TeamCeltic
Possession
Home38%
Away62%
Shots
Home5
Away16
Shots on Target
Home0
Away6
Corners
Home2
Away4
Fouls
Home11
Away9
Live Text
Posted at
Match ends, Rosenborg 0, Celtic 1.
Full TimePosted at 90'+6'
Second Half ends, Rosenborg 0, Celtic 1.
Posted at 90'+5'
Attempt saved. Leigh Griffiths (Celtic) left footed shot from outside the box is saved in the bottom right corner. Assisted by Ryan Christie.
Posted at 90'+3'
Corner, Rosenborg. Conceded by Tomas Rogic.
Posted at 90'+2'
Callum McGregor (Celtic) wins a free kick in the defensive half.
Posted at 90'+2'
Foul by Matthías Vilhjálmsson (Rosenborg).
Posted at 90'+1'
Offside, Rosenborg. Djordje Denic tries a through ball, but Yann-Erik de Lanlay is caught offside.
Posted at 90'
Offside, Rosenborg. Matthías Vilhjálmsson tries a through ball, but Tore Reginiussen is caught offside.
Posted at 90'
Foul by Dedryck Boyata (Celtic).
Posted at 90'
Matthías Vilhjálmsson (Rosenborg) wins a free kick in the attacking half.
Posted at 88'
Foul by Ryan Christie (Celtic).
Posted at 88'
Birger Meling (Rosenborg) wins a free kick in the defensive half.
Posted at 83'
Cristian Gamboa (Celtic) wins a free kick in the defensive half.
Posted at 83'
Foul by Matthías Vilhjálmsson (Rosenborg).
Posted at 79'
Attempt missed. Callum McGregor (Celtic) left footed shot from the left side of the box is just a bit too high. Assisted by Kieran Tierney.
SubstitutionPosted at 78'
Substitution, Rosenborg. Jonathan Levi replaces Samuel Adegbenro.
Posted at 78'
Scott Sinclair (Celtic) wins a free kick in the defensive half.
Posted at 78'
Foul by Vegar Hedenstad (Rosenborg).
SubstitutionPosted at 77'
Substitution, Celtic. Scott Brown replaces James Forrest.
Posted at 76'
Attempt missed. Samuel Adegbenro (Rosenborg) header from the centre of the box is close, but misses to the left. Assisted by Mike Jensen with a cross.
Posted at 76'
Attempt missed. Tore Reginiussen (Rosenborg) header from the centre of the box misses to the left. Assisted by Djordje Denic with a cross following a corner.
Posted at 75'
Corner, Rosenborg. Conceded by Filip Benkovic.
Posted at 75'
Attempt blocked. Mike Jensen (Rosenborg) right footed shot from outside the box is blocked.
Posted at 73'
Attempt blocked. Matthías Vilhjálmsson (Rosenborg) header from the centre of the box is blocked. Assisted by Nicklas Bendtner with a cross.
Posted at 73'
Foul by Tomas Rogic (Celtic).
Posted at 73'
Matthías Vilhjálmsson (Rosenborg) wins a free kick in the defensive half.
Posted at 70'
Ryan Christie (Celtic) wins a free kick in the defensive half.
Posted at 70'
Foul by Mike Jensen (Rosenborg).
Posted at 68'
Foul by Callum McGregor (Celtic).
Posted at 68'
Matthías Vilhjálmsson (Rosenborg) wins a free kick in the defensive half.
Posted at 67'
Delay over. They are ready to continue.
Posted at 66'
Delay in match Birger Meling (Rosenborg) because of an injury.
SubstitutionPosted at 66'
Substitution, Celtic. Leigh Griffiths replaces Odsonne Edouard.
SubstitutionPosted at 66'
Substitution, Celtic. Cristian Gamboa replaces Mikael Lustig.
SubstitutionPosted at 66'
Substitution, Rosenborg. Matthías Vilhjálmsson replaces Anders Trondsen.
Posted at 65'
Attempt blocked. Odsonne Edouard (Celtic) right footed shot from the left side of the box is blocked. Assisted by Tomas Rogic.
Posted at 62'
Foul by Kieran Tierney (Celtic).
Posted at 62'
Yann-Erik de Lanlay (Rosenborg) wins a free kick on the right wing.
Posted at 58'
Kieran Tierney (Celtic) wins a free kick on the left wing.
Posted at 58'
Foul by Djordje Denic (Rosenborg).
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goal
Source: bbc.com