Graha–Ketu–Utpāta Lakṣaṇas: Solar/Lunar Omens, Comets, Eclipses, and Calendar Rules
ह्रस्वः स्निग्धः सुप्रसन्नः श्वेतकेतुः सुवृष्टिकृत् । क्षिप्रादस्तमयं याति दीर्घकेतुरवृष्टिकृत् ॥ ९७ ॥
hrasvaḥ snigdhaḥ suprasannaḥ śvetaketuḥ suvṛṣṭikṛt | kṣiprādastamayaṃ yāti dīrghaketuravṛṣṭikṛt || 97 ||
La comète dont la queue est courte, luisante, très limpide et blanche est cause de bonnes pluies. Elle disparaît vite ; tandis que la comète à longue queue est cause de sécheresse, d’absence de pluie.
Sanatkumara (teaching Narada in a Vedanga-style, omen/astronomy-astrology context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames celestial phenomena (ketu/comets) as meaningful indicators within dharma-governed nature, urging discernment and responsibility in responding to environmental signs rather than superstition.
Indirectly: by showing that the cosmos is orderly and intelligible, it supports a devotional worldview where nature reflects divine governance—encouraging humility, prayer, and righteous conduct during signs of scarcity or abundance.
Vedanga Jyotiṣa (astral science) and nimitta-śāstra style interpretation: short, bright, white-tailed comets indicate good rains, while long-tailed comets indicate drought.