P/2017 K3 (Gasparovic)
| Parameter |
Value |
| Designation |
P/2017 K3 (Gasparovic) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-05-31T11:45:35.870400Z |
| Orbit solution date (soln_date, UTC) |
2021-07-01T22:13:00Z |
| Obs used |
99 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
29.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2017-06-04.0000000 |
| e |
0.58118013 |
| q (au) |
2.334209 |
| a (au) |
5.573301 |
| i (deg) |
4.279072 |
| Ω (om, deg) |
354.328342 |
| ω (w, deg) |
253.209247 |
| M (ma, deg) |
0.262932 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.811 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.811 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.502 |
| k |
1.000 |
| δ90 |
10.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
05:23:23.36 |
+27:48:49.4 |
HIP 25112 |
20.34 |
| 2026-02-03 12:00 |
05:23:16.27 |
+27:48:28.5 |
HIP 25112 |
19.87 |
| 2026-02-04 00:00 |
05:23:09.31 |
+27:48:07.6 |
HIP 25112 |
19.53 |
| 2026-02-04 12:00 |
05:23:02.49 |
+27:47:46.8 |
HIP 25112 |
19.32 |
| 2026-02-05 00:00 |
05:22:55.81 |
+27:47:26.0 |
HIP 25112 |
19.25 |
| 2026-02-05 12:00 |
05:22:49.27 |
+27:47:05.2 |
HIP 25112 |
19.29 |
| 2026-02-06 00:00 |
05:22:42.86 |
+27:46:44.4 |
HIP 25112 |
19.45 |
| 2026-02-06 12:00 |
05:22:36.59 |
+27:46:23.7 |
HIP 25112 |
19.72 |
| 2026-02-07 00:00 |
05:22:30.46 |
+27:46:03.0 |
HIP 25112 |
20.08 |
| 2026-02-07 12:00 |
05:22:24.47 |
+27:45:42.3 |
HIP 25112 |
20.53 |
| 2026-02-08 00:00 |
05:22:18.62 |
+27:45:21.7 |
HIP 25112 |
21.05 |
| 2026-02-08 12:00 |
05:22:12.92 |
+27:45:01.1 |
HIP 24984 |
20.46 |
| 2026-02-09 00:00 |
05:22:07.35 |
+27:44:40.5 |
HIP 24984 |
19.72 |
| 2026-02-09 12:00 |
05:22:01.92 |
+27:44:20.0 |
HIP 24984 |
19.05 |
| 2026-02-10 00:00 |
05:21:56.64 |
+27:43:59.6 |
HIP 24984 |
18.47 |
| 2026-02-10 12:00 |
05:21:51.49 |
+27:43:39.2 |
HIP 24984 |
17.97 |
| 2026-02-11 00:00 |
05:21:46.50 |
+27:43:18.9 |
HIP 24984 |
17.55 |
| 2026-02-11 12:00 |
05:21:41.64 |
+27:42:58.6 |
HIP 24984 |
17.22 |
| 2026-02-12 00:00 |
05:21:36.93 |
+27:42:38.4 |
HIP 24984 |
16.97 |
| 2026-02-12 12:00 |
05:21:32.36 |
+27:42:18.3 |
HIP 24984 |
16.80 |
| 2026-02-13 00:00 |
05:21:27.94 |
+27:41:58.2 |
HIP 24984 |
16.71 |
| 2026-02-13 12:00 |
05:21:23.66 |
+27:41:38.2 |
HIP 24896 |
16.44 |
| 2026-02-14 00:00 |
05:21:19.53 |
+27:41:18.3 |
HIP 24896 |
15.49 |
| 2026-02-14 12:00 |
05:21:15.54 |
+27:40:58.4 |
HIP 24896 |
14.56 |
| 2026-02-15 00:00 |
05:21:11.70 |
+27:40:38.7 |
HIP 24896 |
13.67 |
| 2026-02-15 12:00 |
05:21:08.00 |
+27:40:19.0 |
HIP 24896 |
12.82 |
| 2026-02-16 00:00 |
05:21:04.45 |
+27:39:59.4 |
HIP 24896 |
12.00 |
| 2026-02-16 12:00 |
05:21:01.05 |
+27:39:39.9 |
HIP 24896 |
11.22 |
| 2026-02-17 00:00 |
05:20:57.79 |
+27:39:20.4 |
HIP 24896 |
10.48 |
| 2026-02-17 12:00 |
05:20:54.68 |
+27:39:01.1 |
HIP 24896 |
9.78 |
| 2026-02-18 00:00 |
05:20:51.72 |
+27:38:41.9 |
HIP 24896 |
9.12 |
| 2026-02-18 12:00 |
05:20:48.90 |
+27:38:22.8 |
HIP 24896 |
8.51 |
| 2026-02-19 00:00 |
05:20:46.23 |
+27:38:03.7 |
HIP 24896 |
7.94 |
| 2026-02-19 12:00 |
05:20:43.71 |
+27:37:44.8 |
HIP 24896 |
7.42 |
| 2026-02-20 00:00 |
05:20:41.34 |
+27:37:26.0 |
HIP 24896 |
6.95 |
| 2026-02-20 12:00 |
05:20:39.11 |
+27:37:07.3 |
HIP 24896 |
6.54 |
| 2026-02-21 00:00 |
05:20:37.03 |
+27:36:48.6 |
HIP 24896 |
6.19 |
| 2026-02-21 12:00 |
05:20:35.10 |
+27:36:30.1 |
HIP 24896 |
5.90 |
| 2026-02-22 00:00 |
05:20:33.32 |
+27:36:11.8 |
HIP 24896 |
5.67 |
| 2026-02-22 12:00 |
05:20:31.68 |
+27:35:53.5 |
HIP 24896 |
5.50 |
| 2026-02-23 00:00 |
05:20:30.19 |
+27:35:35.3 |
HIP 24896 |
5.40 |
| 2026-02-23 12:00 |
05:20:28.85 |
+27:35:17.3 |
HIP 24896 |
5.35 |
| 2026-02-24 00:00 |
05:20:27.65 |
+27:34:59.4 |
HIP 24896 |
5.36 |