Sometimes Ovid gives us nothing (*ahem* Medusa *ahem*), sometimes he gives us everything.
Apparently Chiron had a daughter (whose name differs from one source to another) who is... quite interesting and fascinating at the same time, yet I haven't seen anyone talking about her. Hyginus mentions three different myth versions of her story:
Pseudo-Hyginus, Astronomica 2. 18 (trans. Grant) (Roman mythographer C2nd A.D.) :
"Euripides [Greek playwright C5th B.C.] in his Melanippe, says that Melanippe, daughter of Chiron the Centaurus (Centaur), was once called Thetis. Brought up on Mount Helicon, a girl especially fond of hunting, she was wooed by Aeolus, son of Hellen, and grandson of Jove [Zeus], and conceived a child by him. When her time drew near, she fled into the forest, so that her father, who supposed her a virgin, might not see that she had given birth to a grandchild. And so when her father was looking for her, she is said to have begged the power of the gods not to let her father see her in childbirth. After the child was born, by the will of the gods she was changed into a mare which was placed among the stars.
Some say that she was a prophetess, and because she used to reveal the plans of the gods to men, she was changed into a mare.
Callimachus [Greek poet C3rd B.C.] says that because she ceased hunting and worshipping Diana [Artemis], Diana changed her into the shape we have mentioned. For the reason above, too, she is said to be out of sight of the Centaurus, who come say is Chiron, and to show only half her body, since she didn't want her sex to be known."
The second one isn't eleborated, and is presented here more like a "Did you know that...?"
Then there is this passage from the Metamorphoses:
Ovid, Metamorphoses 2. 636 ff (trans. Melville) (Roman epic C1st B.C. to C1st A.D.) :
"One day the Centaurus' [Kheiron's (Chiron's)] daughter came, her auburn hair falling upon her shoulders, whom the Nympha Chariclo once had borne upon the bank beside a flowing river, and had named Ocyroe (Swift-Flowing). The girl was not content to know her father's art: she prophesied fate's dark secrets. In the mystic mood of prophecy, when hidden in her heart the heavenly fervour glowed, she fixed her eyes upon the child [i.e. Asklepios (Asclepius), who was then in the care of Kheiron]. ‘Grow strong, dear boy,’ she said ‘Healer of the world. Often men shall owe health and life, and yours shall be the right to win again departed souls, and, though you dare this once in heaven's despite, Jove's [Zeus'] bolt will thwart that gift a second time. You, now divine, shall be a lifeless corpse, and from a corpse become divine again, and twice you shall renew your destiny [i.e. he was deified following his death through the intercession of Apollon]. You too, dear father [Kheiron], you, immortal now and destined by your birthright to live on through all eternity, will long to die when you are tortured by the serpent's blood [poisoned by an arrow coated with Hydra's blood], that agonizing poison in your wounds; and, saved from immortality, the gods shall put you in death's power, and the three goddesses (Deae Triplices) [i.e. the Moirai] shall unloose your threads of fate.’
More prophecies remained, but then she sighed, sighed deeply, and as tears rolled down her cheeks she cried, ‘Fate forestalls me! I'm forbidden to tell you more. My power of speech is stopped. My arts--oh! never worth so much!--have brought Heaven's wrath upon me. Would I'd never known the future! Surely now my human shape is stolen away; the food I like is grass; I feel the urge to frisk in open fields. I'm changing to a mare--a family shape--but why the whole of me? When plainly half my father's human?’
As she spoke, her last protests were almost meaningless, her words were all confused, sounds that seemed neither words nor whinnies, more like mimicking a mare. Soon she was whinnying clearly, and her arms walked on the grass, and then her fingers joined, and their five nails were bound in a light hoof of undivided horn; her mouth and neck increased in size; her trailing dress became a tail; the hair that wandered on her neck fell as a mane down on the right-hand side; and so her voice and shape alike were new, and that weird change gave her a new name too [i.e. Hippe meaning mare]. Philyreius [Kheiron], the centaur half-divine, invoked, weeping, the lord of Delphi, but in vain. Apollo had no power to countermand great Jove's [Zeus'] decrees and, had he had the power, he was not there."
This fragment is genuinely great for different reasons:
Here her name is Ocyrrhoe, which means Swift-Flowing. Meanwhile Melanippe literally means Black-Mare, and it's supposed to foreshadow her fate. But in this version her parents gave her a beautiful name.
We have a small description of her too (auburn hair).
In the previous fragment we do not get too much about her personality (outside of the fact that she loves hunting, which is a nice detail because her father was good at hunting too), not to mention that in the first version mentioned by Hyginus she seems to fall into the classic "Girl gets pregnant outside marriage then tries to hide her pregnancy from her parents." scenario. Here she's a goddamn prophetess.
Not only that she's a prophetess, but she knew about everyone's fate, including hers. She knew that Asclepcius will start rescuing people back to life, that Zeus will kill him and that he will be brought back to life as a god. She knew that Chiron will be killed by one of Heracles' venomous arrows. She knew that she will be eventually turned into a mare for revealing all these things, yet she continued to speak the truth anyway.
The scene where she's turned into a mare was beautifully written. It almost reminds me of that one disturbing scene from Pinocchio where one of his friends is turned into a donkey.
We have Chiron mourning his daughter and begging Apollo to bring her back to her human form. In the version where Melanippe is hiding from her father as he's searching for her we don't know wheter he would punish her after finding out about her child, or if he's just genuinely concerned about her. Here he's portrayed as a loving father.
Honestly the fact that now both Ocyrrhoe and Chiron are constellations is comforting, somehow. I'm wondering how a scene of them two reuniting in the night sky would look like.