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Table 4
Retrograde comet 161P/Hartley-IRAS: orbital elements (JD 2458600.5) and selected physical data.
| Obj. name | a[au] | e | i2000[deg] | Ω2000[deg] | ω2000[deg] | M[deg] | No. of |
|---|---|---|---|---|---|---|---|
| obs. used | |||||||
| 161P Hartley/IRAS | 7.727 | 0.835 | 95.676 | 1.362 | 46.908 | 232.799 | 361 |
| 1-σ rms | 5.539E-06 | 6.710E-07 | 3.358E-05 | 3.854E-05 | 4.603E-05 | 2.645E-06 | |
| Physical data | |||||||
| JPL NASA Classification: Halley-type comet* [NEO] | |||||||
| Cometary parameters, total magnitude, and its slope: M1 = 11.4, M2 = 15.0 | |||||||
| Cometary parameters NGR [AU/d2]: | |||||||
| A1 = −7.40623E-9 ± 4.55915E-10 (radial) | |||||||
| A2 = −2.05151E-10 ± 2.00006E-11 (transverse) | |||||||
| Earth MOID (minimum orbit intersection distance): 0.447763 AU | |||||||
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