Publikasi mengumumkan harga pembukaan lelang.

Publikasi usually means publication, publishing, or public release/publication.

In this sentence, it is being used as the subject, so it most naturally means something like the publication or the public release/announcement.

A learner should know that this word can sound a bit abstract in Indonesian, depending on context. In some situations, a more concrete subject like panitia (the committee) or pengumuman (the announcement) might sound more natural.

The base is umum, which is related to the idea of public/general.

From that base, Indonesian builds:

• umum = public, general
• umumkan = announce
• mengumumkan = to announce / announces

Here, meN- is the active-verb prefix, and -kan helps form a transitive verb, meaning a verb that takes an object.

So:

• mengumumkan harga = to announce a price

This is very common in Indonesian: a root gets prefixes and suffixes added directly to make a full verb.

Indonesian usually does not use articles like English the, a, or an.

So:

• publikasi can mean a publication or the publication
• harga pembukaan lelang can mean an opening auction price, the opening auction price, or the auction’s opening price

The exact meaning depends on context. This is normal in Indonesian, and learners have to get used to letting context do the work that English articles usually do.

It is a noun phrase built in the typical Indonesian order, where the main noun comes first and the words after it describe it.

Breakdown:

• harga = price
• pembukaan = opening
• lelang = auction

So literally it is something like:

• price opening auction

But natural English is:

• the auction opening price
• the opening price of the auction
• the starting price for the auction

The head of the phrase is harga, and pembukaan lelang describes what kind of price it is.

Pembukaan is a noun meaning opening.

It comes from the root:

• buka = open

With the circumfix:

• peN- ... -an

So:

• buka = open
• pembukaan = opening

This pattern often turns a root into a noun referring to a process, event, or result.

For example:

• pembukaan toko = opening of a store
• pembukaan acara = opening of an event
• harga pembukaan = opening price

Because Indonesian often links nouns directly without a preposition.

So instead of saying:

• opening of auction

Indonesian simply says:

• pembukaan lelang

This is a very common pattern. The second noun modifies the first.

Examples:

• harga rumah = house price
• jadwal rapat = meeting schedule
• pembukaan lelang = auction opening

English often uses of, apostrophe-s, or noun compounds, but Indonesian usually just places the nouns next to each other.

At the clause level, yes, it is mostly the same:

• Publikasi = subject
• mengumumkan = verb
• harga pembukaan lelang = object

So the sentence pattern is:

• Subject + Verb + Object

That part is similar to English.

But inside noun phrases, Indonesian often works differently from English. Indonesian usually puts the main noun first and the modifier after it:

• harga pembukaan lelang
• literally: price opening auction

So sentence-level word order may feel familiar, while phrase-level word order may feel less familiar.

Indonesian verbs usually do not change form for tense.

So mengumumkan by itself can mean:

• announce
• announces
• announced
• will announce

The time is normally understood from context or from time words such as:

• kemarin = yesterday
• sekarang = now
• besok = tomorrow
• sudah = already
• akan = will

So without more context, the sentence does not clearly mark tense the way English does.

It is grammatically understandable, but publikasi as the subject may sound a little abstract or unusual unless the context specifically involves a publication or official publication process.

Depending on the intended meaning, more natural alternatives might be:

• Panitia mengumumkan harga pembukaan lelang.
  The committee announced the auction opening price.

• Pengumuman itu menyebutkan harga pembukaan lelang.
  The announcement stated the auction opening price.

So the original sentence is possible, but whether it sounds natural depends a lot on context.

Yes, in many contexts that would be a very natural English translation.

Literally, it is auction opening price, but in real usage, English often prefers:

• starting bid
• opening bid
• starting price

Which translation is best depends on the situation:

• If the auction wording is formal, opening price may fit.
• If you want idiomatic auction English, starting bid or opening bid may sound better.

So a learner should know both the literal structure and the natural English equivalent.