| Parameter |
Value |
| Designation |
C/1999 K6 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-07-24T16:11:00.306240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:00Z |
| Obs used |
320 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1999-08-05.0000000 |
| e |
0.99352053 |
| q (au) |
2.246977 |
| a (au) |
346.784195 |
| i (deg) |
46.343845 |
| Ω (om, deg) |
245.372062 |
| ω (w, deg) |
56.763680 |
| M (ma, deg) |
0.001729 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.035 + 5.053\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.035 |
| n |
5.053 |
| 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) |
| 2026-06-01 00:00 |
05:55:36.75 |
+00:52:54.6 |
HIP 28056 |
5.83 |
| 2026-06-01 12:00 |
05:55:39.11 |
+00:52:58.3 |
HIP 28056 |
5.35 |
| 2026-06-02 00:00 |
05:55:41.47 |
+00:53:01.8 |
HIP 28056 |
4.89 |
| 2026-06-02 12:00 |
05:55:43.85 |
+00:53:05.2 |
HIP 28056 |
4.46 |
| 2026-06-03 00:00 |
05:55:46.22 |
+00:53:08.5 |
HIP 28056 |
4.07 |
| 2026-06-03 12:00 |
05:55:48.61 |
+00:53:11.7 |
HIP 28056 |
3.73 |
| 2026-06-04 00:00 |
05:55:51.00 |
+00:53:14.8 |
HIP 28056 |
3.46 |
| 2026-06-04 12:00 |
05:55:53.39 |
+00:53:17.8 |
HIP 28056 |
3.28 |
| 2026-06-05 00:00 |
05:55:55.79 |
+00:53:20.7 |
HIP 28056 |
3.20 |
| 2026-06-05 12:00 |
05:55:58.19 |
+00:53:23.4 |
HIP 28056 |
3.23 |
| 2026-06-06 00:00 |
05:56:00.60 |
+00:53:26.0 |
HIP 28056 |
3.37 |
| 2026-06-06 12:00 |
05:56:03.02 |
+00:53:28.6 |
HIP 28056 |
3.60 |
| 2026-06-07 00:00 |
05:56:05.43 |
+00:53:31.0 |
HIP 28056 |
3.91 |
| 2026-06-07 12:00 |
05:56:07.86 |
+00:53:33.3 |
HIP 28056 |
4.29 |
| 2026-06-08 00:00 |
05:56:10.28 |
+00:53:35.4 |
HIP 28056 |
4.71 |
| 2026-06-08 12:00 |
05:56:12.71 |
+00:53:37.5 |
HIP 28056 |
5.17 |
| 2026-06-09 00:00 |
05:56:15.15 |
+00:53:39.5 |
HIP 28056 |
5.66 |
| 2026-06-09 12:00 |
05:56:17.59 |
+00:53:41.3 |
HIP 28056 |
6.17 |
| 2026-06-10 00:00 |
05:56:20.03 |
+00:53:43.0 |
HIP 28056 |
6.69 |
| 2026-06-10 12:00 |
05:56:22.48 |
+00:53:44.6 |
HIP 28056 |
7.23 |
| 2026-06-11 00:00 |
05:56:24.93 |
+00:53:46.1 |
HIP 28056 |
7.78 |
| 2026-06-11 12:00 |
05:56:27.38 |
+00:53:47.5 |
HIP 28056 |
8.34 |
| 2026-06-12 00:00 |
05:56:29.83 |
+00:53:48.7 |
HIP 28056 |
8.91 |
| 2026-06-12 12:00 |
05:56:32.29 |
+00:53:49.9 |
HIP 28056 |
9.48 |
| 2026-06-13 00:00 |
05:56:34.75 |
+00:53:50.9 |
HIP 28056 |
10.05 |
| 2026-06-13 12:00 |
05:56:37.21 |
+00:53:51.8 |
HIP 28056 |
10.63 |
| 2026-06-14 00:00 |
05:56:39.68 |
+00:53:52.6 |
HIP 28056 |
11.22 |
| 2026-06-14 12:00 |
05:56:42.15 |
+00:53:53.3 |
HIP 28056 |
11.81 |
| 2026-06-15 00:00 |
05:56:44.62 |
+00:53:53.8 |
HIP 28056 |
12.40 |
| 2026-06-15 12:00 |
05:56:47.09 |
+00:53:54.3 |
HIP 28056 |
12.99 |
| 2026-06-16 00:00 |
05:56:49.56 |
+00:53:54.6 |
HIP 28056 |
13.58 |
| 2026-06-16 12:00 |
05:56:52.04 |
+00:53:54.8 |
HIP 28056 |
14.18 |
| 2026-06-17 00:00 |
05:56:54.51 |
+00:53:54.9 |
HIP 28056 |
14.78 |
| 2026-06-17 12:00 |
05:56:56.99 |
+00:53:54.9 |
HIP 28056 |
15.38 |
| 2026-06-18 00:00 |
05:56:59.47 |
+00:53:54.7 |
HIP 28056 |
15.98 |
| 2026-06-18 12:00 |
05:57:01.94 |
+00:53:54.5 |
HIP 28056 |
16.58 |
| 2026-06-19 00:00 |
05:57:04.42 |
+00:53:54.1 |
HIP 28056 |
17.18 |
| 2026-06-19 12:00 |
05:57:06.90 |
+00:53:53.6 |
HIP 28056 |
17.79 |
| 2026-06-20 00:00 |
05:57:09.38 |
+00:53:53.0 |
HIP 28056 |
18.39 |
| 2026-06-20 12:00 |
05:57:11.86 |
+00:53:52.2 |
HIP 28056 |
19.00 |
| 2026-06-21 00:00 |
05:57:14.34 |
+00:53:51.4 |
HIP 28056 |
19.60 |
| 2026-06-21 12:00 |
05:57:16.82 |
+00:53:50.4 |
HIP 28056 |
20.21 |
| 2026-06-22 00:00 |
05:57:19.30 |
+00:53:49.4 |
HIP 28056 |
20.82 |