Table 5
RMS errors of purely gravitational (GR) and nongravitational (NG) solutions for the full data arcs, and the PRE and POST data arcs for the LAn and LBn samples of LPCs, in which NG orbits can be determined using the entire data arcs shown in Cols. 3-5 in Table 2.
| Comet | FULL | PRE | POST | |||
|---|---|---|---|---|---|---|
| Type of solution | RMS | Type of solution | RMS | Type of solution | RMS | |
| Sample LAn | ||||||
| C/2000 CT54 | 0.81/0.73/0.74/0.73 | GR | 0.52 | GR | 0.68 | |
| C/2016 N4 | 0.51/0.42/0.43/0.43 | GR/NGCO | 0.35/0.33 | GR/NGstd | 0.44/0.41 | |
| C/2017 M4 | 0.88/0.48/0.48/0.47 | GR/NGCO/NGsub | 0.40/0.37/0.37 | GR/NGCO/NGsub | 0.33/0.31/0.30 | |
| C/1980 E1 | 1.17/1.06/1.06/1.06 | GR | 1.14 | GR | 0.98 | |
| C/1997 BA6 | 0.74/0.67/0.70/0.65 | GR/NGCO/NGsubsolar | 0.53/0.51/0.51 | 0.71/0.70/0.68/0.69 | ||
| C/2012 F3 | 0.55/0.34/0.34/0.35 | GR/NGCO | 0.48/0.46 | GR | 0.53 | |
| C/1999 H3 | 0.67/0.50/0.51/0.51 | GR | 0.49 | GR/NGstd | 0.51/0.50/0.50/0.50 | |
| C/2000 SV74 | 1.06/0.67/0.66/0.66 | 0.58/0.56/0.53/0.54 | 0.70/0.68/0.65/0.66 | |||
| C/2015 O1 | 0.95/0.51/0.51/0.48 | 0.36/0.34/0.33/0.32 | 0.54/0.53/0.53/0.53 | |||
| 1.07/0.67/0.65/0.64 | 0.54/0.46/0.44/0.44 | 0.72/0.71/0.72/0.72 | ||||
| C/2013 G3 | 0.47/0.38/0.38/0.38 | GR | 0.37 | GR | 0.43 | |
| C/2005 EL173 | 0.45/0.42/0.41/0.41 | GR | 0.43 | GR | 0.36 | |
| Sample LBn | ||||||
| C/2008 FK75 | 0.57/0.44/0.44 | 0.42/0.40/0.40 | 0.49/0.48/0.48 | |||
| GR/NGCO | 0.54/0.48 | – | – | – | – | |
| C/1999 U4 | 0.72/0.70/0.70 | GR | 0.64 | GR | 0.71 | |
| C/2015 H2 | 0.72/0.34/0.35 | GR | 0.29 | GR | 0.38 | |
| C/2006 S3 | 0.66/0.53/0.53 | GR/NGCO | 0.52/0.51 | GR/NGCO | 0.53/0.46 | |
| C/2013 V4 | 0.48/0.45/0.45 | GR | 0.44 | GR | 0.44 | |
| C/2009 F4 | 0.54/0.48/0.49 | 0.33/0.32/0.32 | GR | 0.60 | ||
| C/2005 L3 | 0.50/0.49/0.49 | GR | 0.37 | 0.53/0.52/0.52 | ||
| C/2010 U3 | GR/NGCO | 0.59/0.58 | GR/NGCO | 0.56/0.54 | GR | 0.55 |
Notes. Comets are listed in order of increasing osculating perihelion distance. Sample LAn: the four values in Cols. 3, 5, and 7 with RMS refer to the solutions GR/NGstd/NGCO/NGsubsolar, respectively. In other cases, a description is provided in the preceding columns. The lack of any RMS value indicates that the solution is nonphysical (A1 < 0) or uncertain (uncertainties of A1, A2, and A3 greater than the values themselves). For C/2015 O1, solutions based on unweighted data are also shown for comparison on the second line for this comet. Sample LBn: the three values of RMS describe the solutions GR/NGCO/NGCO,50au, respectively. In the case of C/2008 FK75, we compare the results of KD17 (second line) with those redetermined in this study (first line); we discuss this issue further in Sect. 6.1.
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