The deity

…A painting in the maṇṭapa (of Sri Sūryanārāyaṇa)

The image in question: The deities in here are(spelt in Harvard-Kyoto conventions)
- Sūryanārāyaṇa
- Piṅgala,Daṇḍin(Citragupta,Yamarāja)
- Mahāśvetā(between Sūryanārāyaṇa’s feet)
- Uṣā and Pratyuṣā(the two archer Goddesses at the side,also called the Māricī-s)
- Surya’s charioteer Aruṇa
- The seven horses
- Brahmā and Śiva at the sides (the central Aditya being implicitly identified with Viṣṇu)
More can be noted here for those interested in an introduction https://manasataramgini.wordpress.com/2015/08/12/a-note-on-the-pantheon-of-the-indian-saura-tradition/
