Astrology

This page was last updated for (v1.1).

Astrology

This article is about the Astrology skill. For training the skill, see Astrology/Training.

Astrology is a skill that provides passive buffs to various other skills in the game similar to the Agility skill. Modifiers will be unlocked as you level up your mastery in each constellation, and the buff can be upgraded by spending Stardust or Golden Stardust to level up that buff to a maximum level of 5 for Golden Stardust buffs and 8 for Stardust buffs.

Mechanics

Leveling Astrology involves Studying various Constellations, starting with the Deedree Constellation at level 1. Studying has a base interval of 3 seconds per action. Studying does not cost any resources and provides Astrology experience and Mastery experience for the Constellation after each action.

Each Study action also has a chance to provide Stardust, Golden Stardust, or to () discover a Meteorite.

Acquiring Stardust

Both Stardust and Golden Stardust are exclusively obtained from Astrology. Both are acquired at random while studying constellations, where Stardust and Golden Stardust drops with a 5% and 2% chance per action respectively.

The rate at which stardust may be acquired can be increased by:

• Decreasing the action interval
  • Secret Stardust Potion reduces the action interval by 3/5/10/15% depending on the potion's tier. Note that since the potions themselves use Stardust as an ingredient, maximizing the Herblore preservation and doubling chances before creating any of these potions is highly recommended.
  • Variel reduces the action interval by 5%.
  • Superior Astrology Skillcape reduces the action interval by 10%.
  • Owl+ Eagle Synergy reduces the action interval by 10%
    • Owl itself provides 5% interval reduction, so equipping the synergy gives a total of 15% action interval reduction.
• Increasing the drop chance(need rework)
  • For Stardust, the 25% Mastery pool checkpoint provides a +5% bonus to the drop chance, Variel provides a +2% bonus, and Rosaniya provides a +4% bonus.
  • For Golden Stardust, the 50% Mastery pool checkpoint provides a +3% bonus, the 95% Mastery pool checkpoint provides a +2% bonus, Astro provides a +1% bonus to the drop chance, and Variel provides a +2.5% bonus.
  • For Meteorite Ore, the 95% Mastery pool checkpoint provides a +2% bonus, and Variel provides a +0.5% bonus.
• Increasing the drop quantity
  • Equipping Astrology Skillcape provides a +1 bonus to the quantity of both Stardust and Golden Stardust that is dropped.
  • Equipping Superior Astrology Skillcape provides a +2 bonus to the quantity of both Stardust and Golden Stardust that is dropped.

Modifiers

Each constellation starts with 6 different predetermined modifiers. Each modifier will start with 0% bonus. You can use Stardust or Golden Stardust to upgrade it to 8%(standard) or 5%(unique) bonus. Each upgrade gives a 1% bonus.

Upgrading standard modifiers costs Stardust, while upgrading unique modifiers costs Golden Stardust.

The first upgrade needs 10 Stardust or 50 Golden Stardust. With each upgrade, the cost of Stardust or Golden Stardust will double.

Each standard modifier requires 2550 Stardust to max out, and each unique modifier requires 1550 Golden Stardust to max out. This results in a total of 84,150 Stardust ( 114,750 Stardust) and 51,150 Golden Stardust ( 69,750 Golden Stardust) needed to max out every modifier in astrology.

Mastery Unlocks

Item Mastery Unlocks

Level	Unlock
20	Unlock another Star (Unique Modifier)
40	Unlock another Star (Standard Modifier)
60	Unlock another Star (Unique Modifier)
80	Unlock another Star (Standard Modifier)
99	Unlock another Star (Unique Modifier)

Mastery Pool Checkpoints

Pool %	Pool XP	Bonus
10%	800,000 xp	+5% Astrology Mastery XP for Melvor Realm only
25%	2,000,000 xp	+5% chance to gain Stardust in Astrology
50%	4,000,000 xp	+3% chance to gain Golden Stardust in Astrology
95%	7,600,000 xp	+2% chance to locate a Meteorite in Astrology +2% chance to gain Golden Stardust in Astrology
Total Mastery Pool XP		8,000,000

Skillcape

The skillcape can be purchased from the store for 1,000,000 after the player reaches Level 99.
The superior skillcape can be purchased from the store for 10,000,000 after the player reaches Level 120.

Regular Skillcape

The Astrology Skillcape is the skillcape for the Astrology skill. It can be purchased for 1,000,000 from the Shop once the player reaches Level 99 in the Astrology skill. The Astrology Skillcape offers the following benefits when worn:

+1 base quantity when gaining Stardust from Astrology and +1 base quantity when gaining Golden Stardust from Astrology

Superior Skillcape

The Superior Astrology Skillcape is the superior skillcape for the Astrology skill. It can be purchased for 10,000,000 from the Shop once the player reaches Level 120 in the Astrology skill. Level 120 can only be reached if the player owns the Throne of the Herald expansion. Likewise, the superior skillcape can only be purchased if the player owns this expansion. The superior skillcape offers the following benefits when worn:

+2 base quantity when gaining Stardust from Astrology, +2 base quantity when gaining Golden Stardust from Astrology, and -10% Astrology Interval

Pet

The pet can be unlocked by doing any Astrology action.

Pet	Name	DLC	Effect
	Astro		+1% chance to gain Golden Stardust in Astrology

Constellations

The bonuses listed below are the maximum possible.

Constellation		Level	DLC	XP	Skills	Standard Stars		Unique Stars
						Level	Modifiers	Level	Modifiers
	Deedree	1		5	Woodcutting Farming	1	+8% Woodcutting Skill XP +8% Farming Skill XP	20	+5% chance to gain Bird Nest in Woodcutting
						40	+8% Woodcutting Mastery XP +8% Farming Mastery XP	60	+5% base primary resource quantity gained in Farming
						80	+8% Chance to Double Items in Woodcutting +8% Chance to Double Items in Farming	99	+5% chance to gain Stardust from Magic Tree in Woodcutting (Quantity equal to primary skill resource quantity)
	Iridan	10		13	Attack Smithing	1	+8% Accuracy Rating +8% Attack Skill XP	20	+5 Hidden Attack Level
						40	+8% Smithing Mastery XP +8% Smithing Skill XP	60	-5% Smithing Interval
						80	+8% Chance to Double Items in Smithing	99	+5% of Maximum Hit added to Minimum Hit
	Ameria	20		21	Fishing Firemaking	1	+8% Fishing Skill XP +8% Firemaking Skill XP	20	+5% chance to receive Special Items from Fishing
						40	+8% Fishing Mastery XP +8% Firemaking Mastery XP	60	-5% Fishing Interval -5% Firemaking Interval
						80	+8% Chance to Double Items in Fishing +8% Chance to Double Items in Firemaking	99	+5% chance to gain 1 Diamond from Firemaking (Cannot be doubled)
	Terra	30		29	Strength Mining	1	+8% Accuracy Rating +8% Strength Skill XP	20	+5 Hidden Strength Level +5% Melee Strength Bonus from Equipment
						40	+8% Mining Mastery XP +8% Mining Skill XP	60	+5% Chance to receive gems from Mining (Does not work for Rune Essence)
						80	+8% Chance to Double Items in Mining	99	+5% chance to deal no damage to Essence Nodes in Mining +5% chance to deal no damage to Ore Nodes in Mining
	Vale	40		37	Hitpoints Cooking	1	+8% Accuracy Rating +8% Hitpoints Skill XP	20	-5% Cooking Interval
						40	+8% Cooking Mastery XP +8% Cooking Skill XP	60	+5% Lifesteal
						80	+8% Chance to Double Items in Cooking	99	+5% Food Healing Value +5% Chance to Preserve Food when eaten
	Nysa	45		41	Archaeology Cartography	1	+8% Archaeology Skill XP +8% Cartography Skill XP	20	-5 dig site map refinement cost
						40	+8% chance to preserve dig site map excavation actions	60	-5% Cartography survey interval
						80	+8% Archaeology Mastery XP	99	+5% Chance to Double Items in Archaeology +5% Chance to Double Items in Cartography
	Syllia	50		45	Ranged Fletching	1	+8% Accuracy Rating +8% Ranged Skill XP	20	+5 Hidden Ranged Level +5% Ranged Strength Bonus from Equipment
						40	+8% Fletching Mastery XP +8% Fletching Skill XP	60	+5% Ammo Preservation
						80	+8% Chance to Double Items in Fletching	99	+5% Chance to gain +1 additional resource in Fletching (Cannot be doubled)
	Arachi	60		53	Magic Runecrafting	1	+8% Accuracy Rating +8% Magic Skill XP	20	+5 Hidden Magic Level +5% Magic Damage Bonus from Equipment
						40	+8% Runecrafting Mastery XP +8% Runecrafting Skill XP	60	+5% Rune Preservation for Alt. Magic Spells
						80	+8% Chance to Double Items in Runecrafting	99	+5% Chance to receive random Elemental Runes from Runecrafting when creating Runes
	Ko	70		61	Agility Thieving	1	+8% Thieving Skill XP +8% Agility Skill XP	20	-5% Thieving Interval -5% Agility Interval
						40	+8% Thieving Mastery XP +8% Agility Mastery XP	60	+5% GP gained from Agility
						80	+8% Chance to Double Items in Thieving	99	+50 Stealth while Thieving
	Tellus	80		69	Defence Slayer	1	+8 Hidden Defence Level +8% Defence Skill XP	20	+5% Global Slayer Coins (except Item Sales)
						40	+8% Slayer Skill XP	60	+5% Damage to Monsters in Slayer Areas
						80	+8% GP from Combat	99	+5% Reflect Damage
	Hyden	90		77	Prayer Crafting	1	+8% Prayer Skill XP	20	-5% Crafting Interval
						40	+8% Crafting Mastery XP +8% Crafting Skill XP	60	+5% Chance to gain +1 additional resource in Crafting (Cannot be doubled)
						80	+8% Chance to Double Items in Crafting	99	+5% Chance To Preserve Prayer Points
	Qimican	95		85	Summoning Herblore	1	+8% Herblore Skill XP +8% Summoning Skill XP	20	-5% Herblore Interval -5% Summoning Interval
						40	+8% Herblore Mastery XP +8% Summoning Mastery XP	60	+5% Chance To Preserve Potion Charge
						80	+8% Chance to Double Items in Herblore +8% Chance to Double Items in Summoning	99	+5% Chance to preserve Summoning Charges
	Variel	100		155	Astrology	1	+8% Astrology Skill XP	20	-5% Astrology Interval
						40	+8% Astrology Mastery XP for Melvor Realm only	60	+2.5% chance to gain Golden Stardust in Astrology
						80	+2% chance to gain Stardust in Astrology	99	+0.5% chance to locate a Meteorite in Astrology
	Haemir	105		235	Township	1	+8% Township Skill XP	20	+5% Township Happiness
						40	+8% Township Resource Generation	60	-5% Township Building Cost (Capped at -80%)
						80	+8% Township Max Storage	99	+5% Township Education
	Rosaniya	110		335	Woodcutting Fishing Firemaking Cooking Mining Smithing Farming Thieving Fletching Crafting Runecrafting Herblore Agility Summoning Astrology Township	1	+8% chance to receive a Quality Superior Gem while Mining Gem Veins or Meteorite Ore	20	+5% Global GP (except Item Sales)
						40	+8% Chance to Double Items Globally	60	+50 Bank Space
						80	+4% chance to gain Stardust in Astrology	99	+5% Mastery XP for Melvor Realm only
	Ashtar	115		475	Attack Strength Defence Hitpoints Ranged Magic Prayer Slayer	1	+8% Auto Eat Efficiency	20	-5% Attack Interval
						40	+8% Damage To Slayer Tasks	60	+5% Flat Slayer Area Effect Negation
						80	+8% Chance To Double Loot in Combat	99	Gives the enemy: -5% Damage Reduction

Potions

The Secret Stardust Potion reduces the interval for Study actions.

Secret Stardust Potion
Potion	Tier	Charges	Effect
	I	5	-3% Astrology Interval
	II	10	-5% Astrology Interval
	III	15	-10% Astrology Interval
	IV	25	-15% Astrology Interval

The Star Seeker Potion increases the chance of finding Golden Stardust.

Star Seeker Potion
Potion	Tier	Charges	Effect
	I	15	+1% chance to gain Golden Stardust in Astrology
	II	25	+2% chance to gain Golden Stardust in Astrology
	III	35	+3% chance to gain Golden Stardust in Astrology
	IV	50	+5% chance to gain Golden Stardust in Astrology

Summoning Boosts

This table shows all the Summoning Familiars and Synergies that provide a bonus to Astrology.

Familiar 1		Familiar 2		Effect
	Owl			-5% Astrology Interval
	Devil		Owl	Adds an additional +4 to regular stardust drops, gain no golden stardust
	Eagle		Owl	-10% Astrology interval for Melvor Realm only

Skill Boosts

This table lists most sources of Astrology-specific modifier boosts. For a list of boosts that apply to all skills, see the Skill Boosts page. This list does not contain boosts provided from Mastery rewards.

Melvor Idle version v1.3 (Released: 13th June 2024)
Combat: Attack Strength Defence Hitpoints Ranged Magic Prayer Slayer Error creating thumbnail: File missing Corruption
Skills: Farming Township Woodcutting Fishing Firemaking Cooking Mining Smithing Thieving Fletching Crafting Runecrafting Herblore Agility Summoning Astrology Alternative Magic Cartography Archaeology Error creating thumbnail: File missing Harvesting
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Reference Tables: Items, Equipment, Experience Table, Upgrading Items, Combat Areas, Slayer Areas, Dungeons, Strongholds, The Abyss, Monsters