C/1999 K3 (LINEAR)
| Parameter |
Value |
| Designation |
C/1999 K3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-02-27T12:41:00.576960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:59Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
10.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1999-06-05.0000000 |
| e |
0.99166663 |
| q (au) |
1.928739 |
| a (au) |
231.447744 |
| i (deg) |
92.272667 |
| Ω (om, deg) |
266.912524 |
| ω (w, deg) |
341.146990 |
| M (ma, deg) |
0.027284 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.929 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.929 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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 |
05:43:36.29 |
+64:46:18.0 |
HIP 27018 |
2.28 |
| 2026-02-03 12:00 |
05:43:32.24 |
+64:45:57.2 |
HIP 27018 |
2.35 |
| 2026-02-04 00:00 |
05:43:28.24 |
+64:45:36.2 |
HIP 27018 |
2.55 |
| 2026-02-04 12:00 |
05:43:24.27 |
+64:45:15.1 |
HIP 27018 |
2.83 |
| 2026-02-05 00:00 |
05:43:20.35 |
+64:44:53.8 |
HIP 27018 |
3.18 |
| 2026-02-05 12:00 |
05:43:16.47 |
+64:44:32.4 |
HIP 27018 |
3.58 |
| 2026-02-06 00:00 |
05:43:12.63 |
+64:44:10.9 |
HIP 27018 |
4.01 |
| 2026-02-06 12:00 |
05:43:08.83 |
+64:43:49.2 |
HIP 27018 |
4.46 |
| 2026-02-07 00:00 |
05:43:05.08 |
+64:43:27.4 |
HIP 27018 |
4.92 |
| 2026-02-07 12:00 |
05:43:01.37 |
+64:43:05.5 |
HIP 27018 |
5.40 |
| 2026-02-08 00:00 |
05:42:57.71 |
+64:42:43.4 |
HIP 27018 |
5.88 |
| 2026-02-08 12:00 |
05:42:54.09 |
+64:42:21.2 |
HIP 27018 |
6.37 |
| 2026-02-09 00:00 |
05:42:50.51 |
+64:41:58.9 |
HIP 27018 |
6.86 |
| 2026-02-09 12:00 |
05:42:46.98 |
+64:41:36.4 |
HIP 27018 |
7.35 |
| 2026-02-10 00:00 |
05:42:43.49 |
+64:41:13.9 |
HIP 27018 |
7.85 |
| 2026-02-10 12:00 |
05:42:40.05 |
+64:40:51.2 |
HIP 27018 |
8.34 |
| 2026-02-11 00:00 |
05:42:36.65 |
+64:40:28.4 |
HIP 27018 |
8.84 |
| 2026-02-11 12:00 |
05:42:33.30 |
+64:40:05.4 |
HIP 27018 |
9.33 |
| 2026-02-12 00:00 |
05:42:30.00 |
+64:39:42.4 |
HIP 27018 |
9.83 |
| 2026-02-12 12:00 |
05:42:26.74 |
+64:39:19.3 |
HIP 27018 |
10.33 |
| 2026-02-13 00:00 |
05:42:23.52 |
+64:38:56.0 |
HIP 27018 |
10.82 |
| 2026-02-13 12:00 |
05:42:20.36 |
+64:38:32.6 |
HIP 27018 |
11.31 |
| 2026-02-14 00:00 |
05:42:17.24 |
+64:38:09.2 |
HIP 27018 |
11.81 |
| 2026-02-14 12:00 |
05:42:14.16 |
+64:37:45.6 |
HIP 27018 |
12.30 |
| 2026-02-15 00:00 |
05:42:11.14 |
+64:37:21.9 |
HIP 27018 |
12.79 |
| 2026-02-15 12:00 |
05:42:08.16 |
+64:36:58.1 |
HIP 27018 |
13.28 |
| 2026-02-16 00:00 |
05:42:05.23 |
+64:36:34.2 |
HIP 27018 |
13.76 |
| 2026-02-16 12:00 |
05:42:02.34 |
+64:36:10.3 |
HIP 27018 |
14.25 |
| 2026-02-17 00:00 |
05:41:59.51 |
+64:35:46.2 |
HIP 27018 |
14.73 |
| 2026-02-17 12:00 |
05:41:56.72 |
+64:35:22.0 |
HIP 27018 |
15.21 |
| 2026-02-18 00:00 |
05:41:53.98 |
+64:34:57.8 |
HIP 27018 |
15.69 |
| 2026-02-18 12:00 |
05:41:51.29 |
+64:34:33.4 |
HIP 27018 |
16.17 |
| 2026-02-19 00:00 |
05:41:48.64 |
+64:34:09.0 |
HIP 27018 |
16.65 |
| 2026-02-19 12:00 |
05:41:46.05 |
+64:33:44.5 |
HIP 27018 |
17.12 |
| 2026-02-20 00:00 |
05:41:43.51 |
+64:33:19.9 |
HIP 27018 |
17.59 |
| 2026-02-20 12:00 |
05:41:41.01 |
+64:32:55.3 |
HIP 27018 |
18.06 |
| 2026-02-21 00:00 |
05:41:38.56 |
+64:32:30.5 |
HIP 27018 |
18.53 |
| 2026-02-21 12:00 |
05:41:36.16 |
+64:32:05.7 |
HIP 27018 |
19.00 |
| 2026-02-22 00:00 |
05:41:33.82 |
+64:31:40.8 |
HIP 27018 |
19.46 |
| 2026-02-22 12:00 |
05:41:31.52 |
+64:31:15.8 |
HIP 27018 |
19.92 |
| 2026-02-23 00:00 |
05:41:29.27 |
+64:30:50.8 |
HIP 27018 |
20.38 |
| 2026-02-23 12:00 |
05:41:27.07 |
+64:30:25.7 |
HIP 27018 |
20.84 |
| 2026-02-24 00:00 |
05:41:24.92 |
+64:30:00.5 |
HIP 27018 |
21.29 |