Asterank offers a basic queryable database for NASA's Kepler Project. It is a simple way to quickly apply constraints to a set of over 2,000 exoplanets and unconfirmed "objects of interest." The database supports comparators and specific criteria for all attributes provided by the Kepler Data Explorer.
The database currently runs on mongodb and queries must adhere to mongo's json format for a 'find' operation. Information is refreshed nightly from the Kepler Data Explorer.
Requests are of the form:
http://asterank.com/api/kepler?query={query}&limit={limit}
Response data formats:
| KOI | Object of Interest number |
| A | Semi-major axis (AU) |
| RPLANET | Planetary radius (Earth radii) |
| RSTAR | Stellar radius (Sol radii) |
| TSTAR | Effective temperature of host star as reported in KIC (k) |
| KMAG | Kepler magnitude (kmag) |
| TPLANET | Equilibrium temperature of planet, per Borucki et al. (k) |
| T0 | Time of transit center (BJD-2454900) |
| UT0 | Uncertainty in time of transit center (+-jd) |
| UT0 | Uncertainty in time of transit center (+-jd) |
| PER | Period (days) |
| UPER | Uncertainty in period (+-days) |
| DEC | Declination (@J200) |
| RA | Right ascension (@J200) |
| MSTAR | Derived stellar mass (msol) |
This request returns 10 Kepler Objects of Interest with estimated equilibrium temperatures between 290 and 320 Kelvin.
/api/kepler?query={"TPLANET":{"$lt":320,"$gt":290}}&limit=10
Results:
[
{
"KOI":371.01,
"A":1.361,
"DEC":40.8565,
"RSTAR":2.58,
"TSTAR":5215,
"KMAG":12.193,
"TPLANET":316,
"T0":177.08027,
"UT0":0.00297,
"PER":498.3928192,
"RA":19.97841,
"UPER":0.0041914,
"RPLANET":84.19,
"MSTAR":1.33,
"ROW":335
},
{
"KOI":375.01,
"A":0.729,
"DEC":51.1443,
"RSTAR":1.52,
"TSTAR":5757,
"KMAG":13.293,
"TPLANET":300,
"T0":172.22382,
"UT0":0.00095,
"PER":-600.0,
"RA":19.41341,
"UPER":null,
"RPLANET":10.44,
"MSTAR":1.07,
"ROW":339
},
{
"KOI":416.02,
"A":0.36,
"DEC":41.9891,
"RSTAR":0.7,
"TSTAR":5083,
"KMAG":14.29,
"TPLANET":313,
"T0":86.78022,
"UT0":0.00253,
"PER":88.2547155,
"RA":19.12437,
"UPER":0.0006081,
"RPLANET":2.71,
"MSTAR":0.91,
"ROW":370
},
{
"KOI":438.02,
"A":0.23,
"DEC":51.0819,
"RSTAR":0.56,
"TSTAR":4351,
"KMAG":14.258,
"TPLANET":298,
"T0":116.51701,
"UT0":0.00359,
"PER":52.661868,
"RA":19.23306,
"UPER":0.0005769,
"RPLANET":2.1,
"MSTAR":0.58,
"ROW":393
},
{
"KOI":448.02,
"A":0.193,
"DEC":40.8688,
"RSTAR":0.48,
"TSTAR":4264,
"KMAG":14.902,
"TPLANET":296,
"T0":127.47967,
"UT0":0.00157,
"PER":43.6089113,
"RA":19.80468,
"UPER":0.0002403,
"RPLANET":2.31,
"MSTAR":0.65,
"ROW":404
},
{
"KOI":536.01,
"A":0.58,
"DEC":48.4318,
"RSTAR":0.89,
"TSTAR":5614,
"KMAG":14.499,
"TPLANET":306,
"T0":111.59086,
"UT0":0.0042,
"PER":162.3394033,
"RA":19.06827,
"UPER":0.0022306,
"RPLANET":3.0,
"MSTAR":1.03,
"ROW":504
},
{
"KOI":622.01,
"A":0.534,
"DEC":51.2638,
"RSTAR":0.91,
"TSTAR":5171,
"KMAG":14.932,
"TPLANET":298,
"T0":146.49936,
"UT0":0.00257,
"PER":155.0429186,
"RA":19.72535,
"UPER":0.0013764,
"RPLANET":6.96,
"MSTAR":1.01,
"ROW":591
},
{
"KOI":683.01,
"A":0.863,
"DEC":43.2584,
"RSTAR":1.11,
"TSTAR":5887,
"KMAG":13.714,
"TPLANET":295,
"T0":110.51941,
"UT0":0.00181,
"PER":278.122206,
"RA":19.85495,
"UPER":0.0025523,
"RPLANET":5.99,
"MSTAR":1.02,
"ROW":655
},
{
"KOI":775.03,
"A":0.176,
"DEC":49.9757,
"RSTAR":0.52,
"TSTAR":4075,
"KMAG":15.095,
"TPLANET":310,
"T0":84.59631,
"UT0":0.00443,
"PER":36.4459073,
"RA":19.11587,
"UPER":0.0004933,
"RPLANET":1.86,
"MSTAR":0.55,
"ROW":765
},
{
"KOI":812.03,
"A":0.212,
"DEC":39.2783,
"RSTAR":0.56,
"TSTAR":4097,
"KMAG":15.954,
"TPLANET":293,
"T0":98.24474,
"UT0":0.00743,
"PER":46.1828814,
"RA":19.07194,
"UPER":0.0009125,
"RPLANET":2.02,
"MSTAR":0.59,
"ROW":801
}
]