| Parameter |
Value |
| Designation |
C/1999 K5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-07-04T09:14:43.310400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:00Z |
| Obs used |
239 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
10.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2000-03-16.0000000 |
| e |
1.00176295 |
| q (au) |
3.255394 |
| a (au) |
-1846.560639 |
| i (deg) |
89.471269 |
| Ω (om, deg) |
106.379754 |
| ω (w, deg) |
241.485412 |
| M (ma, deg) |
-0.001371 |
Magnitude
Scatter + Global Linear
$$
M_a = (3.963 + 5.981\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
3.963 |
| n |
5.981 |
| gf |
1.000 |
| gb |
-0.529 |
| 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 |
07:30:36.04 |
+52:31:04.8 |
HIP 36584 |
10.67 |
| 2026-06-01 12:00 |
07:30:39.15 |
+52:30:50.7 |
HIP 36584 |
10.48 |
| 2026-06-02 00:00 |
07:30:42.27 |
+52:30:36.6 |
HIP 36584 |
10.32 |
| 2026-06-02 12:00 |
07:30:45.41 |
+52:30:22.7 |
HIP 36584 |
10.17 |
| 2026-06-03 00:00 |
07:30:48.58 |
+52:30:08.8 |
HIP 36584 |
10.05 |
| 2026-06-03 12:00 |
07:30:51.76 |
+52:29:55.1 |
HIP 36584 |
9.95 |
| 2026-06-04 00:00 |
07:30:54.97 |
+52:29:41.5 |
HIP 36584 |
9.88 |
| 2026-06-04 12:00 |
07:30:58.19 |
+52:29:27.9 |
HIP 36584 |
9.83 |
| 2026-06-05 00:00 |
07:31:01.44 |
+52:29:14.5 |
HIP 36584 |
9.82 |
| 2026-06-05 12:00 |
07:31:04.70 |
+52:29:01.1 |
HIP 36584 |
9.82 |
| 2026-06-06 00:00 |
07:31:07.98 |
+52:28:47.9 |
HIP 36584 |
9.86 |
| 2026-06-06 12:00 |
07:31:11.28 |
+52:28:34.7 |
HIP 36584 |
9.92 |
| 2026-06-07 00:00 |
07:31:14.60 |
+52:28:21.7 |
HIP 36584 |
10.01 |
| 2026-06-07 12:00 |
07:31:17.94 |
+52:28:08.7 |
HIP 36584 |
10.13 |
| 2026-06-08 00:00 |
07:31:21.30 |
+52:27:55.9 |
HIP 36584 |
10.27 |
| 2026-06-08 12:00 |
07:31:24.67 |
+52:27:43.2 |
HIP 36584 |
10.44 |
| 2026-06-09 00:00 |
07:31:28.07 |
+52:27:30.6 |
HIP 36584 |
10.63 |
| 2026-06-09 12:00 |
07:31:31.48 |
+52:27:18.1 |
HIP 36584 |
10.85 |
| 2026-06-10 00:00 |
07:31:34.91 |
+52:27:05.7 |
HIP 36584 |
11.09 |
| 2026-06-10 12:00 |
07:31:38.35 |
+52:26:53.4 |
HIP 36584 |
11.35 |
| 2026-06-11 00:00 |
07:31:41.81 |
+52:26:41.2 |
HIP 36584 |
11.63 |
| 2026-06-11 12:00 |
07:31:45.29 |
+52:26:29.1 |
HIP 36584 |
11.93 |
| 2026-06-12 00:00 |
07:31:48.79 |
+52:26:17.2 |
HIP 36584 |
12.24 |
| 2026-06-12 12:00 |
07:31:52.30 |
+52:26:05.3 |
HIP 36584 |
12.58 |
| 2026-06-13 00:00 |
07:31:55.83 |
+52:25:53.6 |
HIP 36584 |
12.93 |
| 2026-06-13 12:00 |
07:31:59.37 |
+52:25:42.0 |
HIP 36584 |
13.29 |
| 2026-06-14 00:00 |
07:32:02.93 |
+52:25:30.5 |
HIP 36584 |
13.67 |
| 2026-06-14 12:00 |
07:32:06.50 |
+52:25:19.1 |
HIP 36584 |
14.06 |
| 2026-06-15 00:00 |
07:32:10.09 |
+52:25:07.8 |
HIP 36584 |
14.46 |
| 2026-06-15 12:00 |
07:32:13.69 |
+52:24:56.7 |
HIP 36584 |
14.87 |
| 2026-06-16 00:00 |
07:32:17.31 |
+52:24:45.6 |
HIP 36584 |
15.29 |
| 2026-06-16 12:00 |
07:32:20.94 |
+52:24:34.7 |
HIP 36584 |
15.72 |
| 2026-06-17 00:00 |
07:32:24.59 |
+52:24:23.9 |
HIP 36584 |
16.16 |
| 2026-06-17 12:00 |
07:32:28.25 |
+52:24:13.3 |
HIP 36584 |
16.61 |
| 2026-06-18 00:00 |
07:32:31.92 |
+52:24:02.7 |
HIP 36584 |
17.07 |
| 2026-06-18 12:00 |
07:32:35.61 |
+52:23:52.3 |
HIP 36584 |
17.53 |
| 2026-06-19 00:00 |
07:32:39.31 |
+52:23:42.0 |
HIP 36584 |
18.00 |
| 2026-06-19 12:00 |
07:32:43.02 |
+52:23:31.8 |
HIP 36584 |
18.48 |
| 2026-06-20 00:00 |
07:32:46.75 |
+52:23:21.8 |
HIP 36584 |
18.96 |
| 2026-06-20 12:00 |
07:32:50.48 |
+52:23:11.9 |
HIP 36584 |
19.45 |
| 2026-06-21 00:00 |
07:32:54.23 |
+52:23:02.1 |
HIP 36584 |
19.94 |
| 2026-06-21 12:00 |
07:32:57.99 |
+52:22:52.4 |
HIP 36584 |
20.44 |
| 2026-06-22 00:00 |
07:33:01.76 |
+52:22:42.9 |
HIP 36584 |
20.94 |