Add a wrapper around dastcom5

Author: shreyasbapat

sbpy/data/orbit.py

@@ -17,6 +17,7 @@
 
 from .. import bib
 from . import conf, DataClass
+from .. import utils
 
 __all__ = ['Orbit']
 
@@ -133,6 +134,33 @@ def from_horizons(cls, targetids, id_type='smallbody',
 
         return cls.from_table(all_elem)
 
+    @classmethod
+    def from_dastcom5(cls, name):
+        """Load orbital elements from the DASTCOM5 Database
+        (ftp://ssd.jpl.nasa.gov/pub/ssd/dastcom5.zip).
+
+        Parameters
+        ----------
+        name: str, mandatory
+            Name of NEO
+
+        Returns
+        -------
+        `~Orbit` object
+
+        Examples
+        --------
+        >>> from sbpy.data import Orbit
+        >>> orb = Orbit.from_dastcom5('atira')
+
+        """
+        dastcom5_dir = os.path.join(utils.dastcom5.SBPY_LOCAL_PATH, "dastcom5")
+        if not os.path.isdir(dastcom5_dir):
+            utils.dastcom5.download_dastcom5()
+
+        tb = utils.dastcom5.orbit_from_name(name=name)
+        return cls.from_table(tb)
+
     @classmethod
     def from_mpc(cls, targetid):
         """Load orbital elements from the Minor Planet Center

sbpy/utils/dastcom5.py

@@ -330,7 +330,7 @@ def orbit_from_name(name):
 
     """
     records = record_from_name(name)
-    orbits = [self.orbit_from_record(rec) for rec in records]
+    orbits = [orbit_from_record(rec) for rec in records]
     tbl = Table(orbits)
     return tbl