Table B.1
Abundances of ammonia in comets from ground-based observations.
| UT date (yyyy/mm/dd.d) | rh (au) |  (%) |
Comet Typea | Name | Reference |
|---|---|---|---|---|---|
| Radio data (λ ~cm)b | |||||
| 1996 03 24 | 1.07 | 0.44 ± 0.17 | LPC | C/1996 B2 (Hyakutake) | Wootten et al. (1996a,b); Palmer et al. (1996), (A. Wootten & B. Butler, pers. comm.)c |
| 1997 03 30 | 0.92 | 0.66 ± 0.13 | LPC | C/1995 O1 (Hale-Bopp) | Bird et al. (1997)d |
| 1997 04 20 | 0.98 | 1.8 ± 0.9 | LPC | C/1995 O1 (Hale-Bopp) | Hirota et al. (1999) |
| 1997 05 22 | 1.27 | 0.14 ± 0.05 | LPC | C/1995 O1 (Hale-Bopp) | Butler et al. (2002), |
| (A. Wootten & B. Butler, pers. comm.)e | |||||
| 2020 07 24.8 | 0.67 | < 0.29 | LPC | C/2020 F3 (NEOWISE) | This paper |
| Radio data (λ = 0.52 mm) | |||||
| 2004 04 29.8 | 1.00 | 0.50 ± 0.09 | DNC | C/2001 Q4 (NEAT) | Biver et al. (2007) |
| 2004 05 25.9 | 0.93 | 0.33 ± 0.08 | DNC | C/2002 T7 (LINEAR) | Biver et al. (2007) |
| 2010 07 19.1 | 1.43 | 0.46 ± 0.04 | JFC | 10P/Tempel2 | Biver et al. (2012) |
| 2010 10 30.6 | 1.06 | 0.45 ± 0.04 | JFC | 103P/Hartley2 | Unpublished results from Herschel (N. Biver, pers. comm.) |
| 2011 08 14.0 | 1.03 | 0.80 ± 0.03 | JFC | 45P/Honda-Mrkos-Pajdušáková | idem |
| 2011 10 08.9 | 1.86 | 0.20 ± 0.03 | DNC | C/2009 P1 (Garradd) | idem |
| Infrared data | |||||
| 2007 12 23 | 1.16 | 0.72 ± 0.38 | HTC | 8P/Tuttle | Lippi et al. (2021) |
| 2007 10 29 | 2.45 | 0.82 ± 0.52 | JFC | 17P/Holmes | idem |
| 2005 07 04 | 1.51 | 1.14 ± 0.72 | JFC | 9P/Tempel 1 | idem |
| 2010 07 26 | 1.44 | 1.12 ± 0.24 | JFC | 10P/Tempel2 | idem |
| 2010 10 30 | 1.07 | 0.64 ± 0.06 | JFC | 103P/Hartley2 | idem |
| 1999 08 19 | 1.07 | 0.56 ± 0.15 | LPC | C/1999 H1 (Lee) | idem |
| 2005 01 19 | 1.21 | 0.24 ± 0.01 | LPC | C/2004 Q2 (Machholz) | idem |
| 2009 02 01 | 1.26 | 0.27 ± 0.16 | DNC | C/2007 N3 (Lulin) | idem |
| 2008 07 09 | 0.89 | 0.76 ± 0.14 | DNC | C/2007 W1 (Boattini) | idem |
| 2012 01 09 | 1.57 | 1.03 ± 0.81 | DNC | C/2009 P1 (Garradd) | idem |
| 2013 06 20 | 1.74 | 0.58 ± 0.23 | LPC | C/2012 F6 (Lemmon) | idem |
| 2013 10 25 | 1.32 | 1.48 ± 0.28 | LPC | C/2013 R1 (Lovejoy) | idem |
| 2008 08 11 | 1.35 | 0.52 ± 0.15 | JFC | 6P/d’Arrest | Dello Russo et al. (2016) |
| 2005 07 04 | 1.51 | 0.9 ± 0.3 | JFC | 9P/Tempel 1 | idem |
| 2010 07 26 | 1.44 | 0.83 ± 0.2 | JFC | 10P/Tempel2 | idem |
| 2010 02 23 | 1.60 | 0.6 ± 0.3 | JFC | 81P/Wild 2 | idem |
| 2010 10 30 | 1.07 | 0.66 ± 0.06 | JFC | 103P/Hartley2 | idem |
| 1999 08 21 | 1.08 | 0.70 ± 0.22 | LPC | C/1999 H1 (Lee) | idem |
| 2005 01 25 | 1.21 | 0.31 ± 0.03 | LPC | C/2004 Q2 (Machholz) | idem |
| 2007 01 28 | 0.55 | 1.5 ± 0.3 | DNC | C/2006 P1 (McNaught) | idem |
| 2009 02 15 | 1.35 | 0.24 ± 0.05 | DNC | C/2007 N3 (Lulin) | idem |
| 2008 07 10 | 0.90 | 1.74 ± 0.17 | DNC | C/2007 W1 (Boattini) | idem |
| 2011 10 13 | 1.83 | 0.48 ± 0.13 | DNC | C/2009 P1 (Garradd) | idem |
| 2013 06 20 | 1.74 | 0.61 ± 0.21 | LPC | C/2012 F6 (Lemmon) | idem |
| 2013 11 07.6 | 0.84 | < 0.93 | DNC | C/2012 S1 (ISON) | DiSanti et al. (2016) |
| 2013 11 19.8 | 0.46 | 3.58 ± 0.33 | DNC | C/2012 S1 (ISON) | idem |
| 2013 11 23.0 | 0.34 | 3.22 ± 0.70 | DNC | C/2012 S1 (ISON) | idem |
| 2013 11 07 | 1.16 | 0.10 ± 0.02 | LPC | C/2013 R1 (Lovejoy) | Dello Russo et al. (2016) |
| 2014 02 03 | 1.29 | 0.64 ± 0.06 | LPC | C/2014 Q2 (Lovejoy) | Dello Russo et al. (2022) |
| 2017 01 08 | 0.56 | 0.64 ± 0.24 | JFC | 45P/Honda-Mrkos-Pajdušáková | DiSanti et al. (2017) |
| 2017 02 16 | 1.05 | 0.83 ± 0.67 | JFC | 45P/Honda-Mrkos-Pajdušáková | Dello Russo et al. (2020) |
| 2017 03 25 | 0.53 | 0.61 ± 0.04 | ETC | 2P/Encke | Roth et al. (2018) |
| 2014 09 05 | 0.78 | 0.75 ± 0.10 | DNC | C/2013 V5 (Oukaimeden) | DiSanti et al. (2018) |
| 2017 04 04 | 0.66 | 1.86 ± 0.36 | LPC | C/2017 E4 (Lovejoy) | Faggi et al. (2018) |
| 2018 12 17 | 1.06 | 0.66 ± 0.20 | JFC | 46P/Wirtanen | Bonev et al. (2021) |
| 2018 12 21 | 1.06 | 0.50 ± 0.06 | JFC | 46P/Wirtanen | Khan et al. (2021) |
| 2020 07 31.1 | 0.81 | 0.73 ± 0.10 | LPC | C/2020 F3 (NEOWISE) | Faggi et al. (2021) |
| 2020 08 06.3 | 0.94 | 0.92 ± 0.19 | LPC | C/2020 F3 (NEOWISE) | idem |
Notes.(a) ETC = Encke-Type Comet, JFC = Jupiter-Family Comet, LPC = Long-Period Comets originating from the Oort Cloud, DNC = Dynamically New Oort Cloud Comet, HTC = Halley-Type Comet. (b) For other tentative detections and non-detections in further comets, see also Altenhoff et al. (1983); Bird et al. (1987); Churchwell et al. (1976); Bird et al. (2002); Hatchell et al. (2005). (c) 
mol s−1 from the tabulated references and 
mol s−1 from Mumma et al. (1996). (d) 
mol s−1 from Bird et al. (1997) and 
mol s−1, which is the best-possible estimate for the dates of NH3 observations based on SOHO/SWAN measurements of Combi (2002), NRT data analysis of Colom et al. (1999), and near-ultraviolet OH observations of Harris et al. (2002). (e) 
mol s−1 from the tabulated references and 
mol s−1 Combi et al. (2000).
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