An instance of a class.
Object properties
The Object tab
| Property | Metamodel name | Description |
| Number | Number | |
| Group | ||
| Persistent | IsPersistent | Initial value is on. |
| Transient | IsTransient | Initial value is off. |
| Static | IsStatic | Initial value is off. |
| Style | Style |
Choices are: Hexagon Rectangle OMT |
| Property | Property |
Choices are: Root Leaf Abstract |
| Active | Active | Initial value is off. |
| Display as | DisplayType |
Choices are: Normal Anonymous All |
| Instance of | InstanceOf | Links to: Class, Actor, Component. |
| Show on diagram | ShowOnDiagram | Initial value is off. |
| Value instance | ValueInstance | |
| Has object diagram | HasObjectDiagram | Links to: ClassDiagram. |
The Extensions tab
| Property | Metamodel name | Description |
| Stereotype | Stereotype | Links to: Stereotype. |
| Constraints | HasConstraints | Links to: Constraint. |
| Tagged values | HasTaggedValues | Links to: TagDefinition. |