By Alexander Winning

MOSCOW (Reuters) — Russian financial markets saw a muted reaction on Tuesday after ratings agency S&P downgraded the countrys sovereign credit rating to junk, with the rouble strengthening and Moscow-listed shares broadly steady.

Although the rouble fell sharply on Monday and bond yields rose, analysts said that the immediate implications of the downgrade were limited, as the move was largely priced in and other major agencies still rate Russia above junk.

Bond yields on Russian Eurobonds did edge higher on Tuesday, however, as did the cost of insuring exposure to Russian debt.

At 1420 GMT, the rouble was around 1.6 percent stronger against the dollar at 67.67 and gained 0.3 percent to trade at 77.00 versus the euro .

The rouble had fallen 6 percent on Monday, with around half the loss following S&Ps downgrade in the evening.

Russian assets had already fallen sharply before the decision because of renewed fighting in Ukraine and the threat of fresh Western sanctions against Russia.

S&P cut Russias rating from BBB- to BB+, citing Russias weakened economic growth prospects, hit by low oil prices and Western sanctions over the Ukraine crisis.

Two other major ratings agencies, Moodys and Fitch, are yet to downgrade Russia to below investment grade.

If the other agencies also cut Russia to junk status in the coming months, a move that is now also widely anticipated, then we may see some selling pressure from investors prohibited from owning sub-investment grade debt, said Chris Weafer, senior partner at Macro-Advisory consultancy in Moscow.

But ownership of Russian assets by such low-risk investors is quite small now as most sold out of Russia last year as the Ukraine crisis escalated, the economy slowed and the oil price fell, he said.

President Vladimir Putins spokesman told Reuters that ratings decisions were politically motivated and bore no relation to economic realities.

The central banks first deputy governor, meanwhile, said the downgrade had already been factored into many decisions.

ROUBLE SUPPORTED

The rouble was seen supported by exporters selling foreign currency, which they have been doing at regular intervals after the government pressured them to do so to help the Russian currency.

Russian share indexes were mixed, largely swayed by the rouble moves. The dollar-denominated RTS index <.IRTS> was down 0.2 percent to 780 points, while the rouble-based MICEX <.MCX> was 2 percent higher at 1,675 points.

Unlike the foreign exchange market, Russias stock exchange was closed on Monday evening, so the impact of S&Ps decision was priced on Tuesday.

Bond yields on Russias benchmark 2030 Eurobond rose by 11 basis points to 7.40 percent on Tuesday, after rising almost 40 basis points on Monday.

Russian dollar bond yield spreads over safe-haven U.S. Treasuries widened by 13 basis points to the highest level since mid-December <.JPMEGRUSR> <11EML>.

The downgrade leaves Russia in junk territory for the first time in a decade, which could push up its borrowing costs as many mainstream investment and pension funds have rules preventing them from buying anything not classed as investment grade.

One positive was that S&P maintained Russias investment grade rating on local currency sovereign bonds, in which government debt is mostly issued, Neil Shearing at Capital Economics said in a note.

Jochen Wermuth, chief investment officer at Wermuth Asset Management, however, said the long-term effects for Russia could be more serious.

While the smart money may have anticipated a downgrade, there will be a difference like day and night between being an investment grade country or not for debt and equity markets.

For rouble poll data see

For Russian equities guide see

For Russian treasury bonds see <0#RUTSY=MM>

link.reuters.com/dun63s

(Editing by Jason Bush and Giles Elgood)