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Table 2
Primary constants used for the compilation of the DE405/DE406 (Standish 1998) and the INPOP10a long-term numerical ephemerides.
| Constant | Description | DE405/406 Values | INPOP10a Values |
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| AU (km) | astronomical unit | 149 597 870.691 | 1 149 597 870.6910 |
| GM⊙ (km3 s-2) | Heliocentric gravitational constant | 1 327 124 40017.987 | 1 1 327 124 40055 |
| GME (m3 s-2) | Geocentric gravitational constant | 1 3.986004414 × 1014 | |
| EMRAT | Ratio of the mass of the Earth to the Moon | 81.30056 | 2 81.3005700 |
| M⊙/MMe | Ratio of the mass of the Sun to Mercury | 6 023 600. | 2 6 023 600. |
| M⊙/MVe | Ratio of the mass of the Sun to Venus | 408 523.71 | 2 408 523.719 |
| M⊙/ME | Ratio of the mass of the Sun to the Earth | 332 946.050895 | |
| M⊙/MMa | Ratio of the mass of the Sun to Mars | 3 098 708. | 2 3 098 703.59 |
| M⊙/MJ | Ratio of the mass of the Sun to Jupiter | 1047.3486 | 2 1047.348644 |
| M⊙/MSa | Ratio of the mass of the Sun to Saturn | 3497.888 | 2 3497.9018 |
| M⊙/MU | Ratio of the mass of the Sun to Uranus | 22 902.98 | 2 22 902.98 |
| M⊙/MN | Ratio of the mass of the Sun to Neptune | 19 142.24 | 2 19 412.26 |
| M⊙/MP | Ratio of the mass of the Sun to (134340) Pluto | 135 200 000. | 2 136 566 000. |
| MCeres/M⊙ | Ratio of the mass of (1) Ceres to the Sun | 4.7 × 10-10 | 1 4.75836 × 10-10 |
| MPallas/M⊙ | Ratio of the mass of (2) Pallas to the Sun | 1.0 × 10-10 | 1 1.11394 × 10-10 |
| MVesta/M⊙ | Ratio of the mass of (4) Vesta to the Sun | 1.3 × 10-10 | 1 1.33137 × 10-10 |
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