139 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC – 2nd century BC – 1st century BC
Decades:	160s BC  150s BC  140s BC  – 130s BC –  120s BC  110s BC  100s BC
Years:	142 BC 141 BC 140 BC – 139 BC – 138 BC 137 BC 136 BC

139 BC in other calendars

Gregorian calendar	139 BC CXXXVIII BC
Ab urbe condita	615
Ancient Egypt era	XXXIII dynasty, 185
- Pharaoh	Ptolemy VIII Physcon, 7
Ancient Greek era	160th Olympiad, year 2
Assyrian calendar	4612
Bengali calendar	−731
Berber calendar	812
Buddhist calendar	406
Burmese calendar	−776
Byzantine calendar	5370–5371
Chinese calendar	辛丑年 (Metal Ox) 2558 or 2498     — to — 壬寅年 (Water Tiger) 2559 or 2499
Coptic calendar	−422 – −421
Discordian calendar	1028
Ethiopian calendar	−146 – −145
Hebrew calendar	3622–3623
Hindu calendars
- Vikram Samvat	−82 – −81
- Shaka Samvat	N/A
- Kali Yuga	2963–2964
Holocene calendar	9862
Iranian calendar	760 BP – 759 BP
Islamic calendar	783 BH – 782 BH
Julian calendar	N/A
Korean calendar	2195
Minguo calendar	2050 before ROC 民前2050年
Seleucid era	173/174 AG
Thai solar calendar	404–405

Year 139 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Piso and Laenas (or, less frequently, year 615 Ab urbe condita). The denomination 139 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

China

• Emperor Wu of Han sends an envoy into Bactria, Parthia and Ferghana.

Roman Republic

• The Lusitanian War ends when the rebellion collapses after the assassination of Viriathus by a Roman agent.

By topic

Astronomy

• Hipparchus makes a very precise determination of the length of the synodic month.

Deaths

• Viriathus, Lusitanian leader (assassinated)