| 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) |
| 2026-09-20 00:00 |
06:02:33.81 |
+64:01:11.5 |
HIP 28914 |
24.16 |
| 2026-09-20 12:00 |
06:02:34.04 |
+64:01:33.8 |
HIP 28914 |
24.08 |
| 2026-09-21 00:00 |
06:02:34.22 |
+64:01:56.2 |
HIP 28914 |
24.00 |
| 2026-09-21 12:00 |
06:02:34.35 |
+64:02:18.6 |
HIP 28914 |
23.94 |
| 2026-09-22 00:00 |
06:02:34.43 |
+64:02:40.9 |
HIP 28914 |
23.90 |
| 2026-09-22 12:00 |
06:02:34.47 |
+64:03:03.3 |
HIP 28914 |
23.86 |
| 2026-09-23 00:00 |
06:02:34.46 |
+64:03:25.8 |
HIP 28914 |
23.83 |
| 2026-09-23 12:00 |
06:02:34.40 |
+64:03:48.2 |
HIP 28914 |
23.81 |
| 2026-09-24 00:00 |
06:02:34.29 |
+64:04:10.6 |
HIP 28914 |
23.81 |
| 2026-09-24 12:00 |
06:02:34.13 |
+64:04:33.0 |
HIP 28914 |
23.81 |
| 2026-09-25 00:00 |
06:02:33.93 |
+64:04:55.5 |
HIP 28914 |
23.83 |
| 2026-09-25 12:00 |
06:02:33.68 |
+64:05:17.9 |
HIP 28914 |
23.86 |
| 2026-09-26 00:00 |
06:02:33.38 |
+64:05:40.3 |
HIP 28914 |
23.90 |
| 2026-09-26 12:00 |
06:02:33.03 |
+64:06:02.8 |
HIP 28914 |
23.95 |
| 2026-09-27 00:00 |
06:02:32.64 |
+64:06:25.2 |
HIP 28914 |
24.01 |
| 2026-09-27 12:00 |
06:02:32.19 |
+64:06:47.6 |
HIP 28914 |
24.08 |
| 2026-09-28 00:00 |
06:02:31.70 |
+64:07:10.0 |
HIP 28914 |
24.16 |
| 2026-09-28 12:00 |
06:02:31.16 |
+64:07:32.4 |
HIP 28914 |
24.26 |
| 2026-09-29 00:00 |
06:02:30.57 |
+64:07:54.8 |
HIP 28914 |
24.36 |
| 2026-09-29 12:00 |
06:02:29.94 |
+64:08:17.2 |
HIP 28914 |
24.48 |
| 2026-09-30 00:00 |
06:02:29.25 |
+64:08:39.6 |
HIP 28914 |
24.60 |
| 2026-09-30 12:00 |
06:02:28.52 |
+64:09:01.9 |
HIP 28914 |
24.74 |
| 2026-10-01 00:00 |
06:02:27.74 |
+64:09:24.3 |
HIP 28914 |
24.88 |
| 2026-10-01 12:00 |
06:02:26.91 |
+64:09:46.6 |
HIP 28914 |
25.04 |
| 2026-10-02 00:00 |
06:02:26.03 |
+64:10:08.9 |
HIP 28914 |
25.21 |
| 2026-10-02 12:00 |
06:02:25.10 |
+64:10:31.2 |
HIP 28914 |
25.38 |
| 2026-10-03 00:00 |
06:02:24.13 |
+64:10:53.5 |
HIP 28914 |
25.57 |
| 2026-10-03 12:00 |
06:02:23.10 |
+64:11:15.7 |
HIP 28914 |
25.76 |
| 2026-10-04 00:00 |
06:02:22.03 |
+64:11:37.9 |
HIP 28914 |
25.97 |
| 2026-10-04 12:00 |
06:02:20.91 |
+64:12:00.1 |
HIP 28914 |
26.18 |
| 2026-10-05 00:00 |
06:02:19.74 |
+64:12:22.2 |
HIP 28914 |
26.40 |
| 2026-10-05 12:00 |
06:02:18.52 |
+64:12:44.3 |
HIP 28914 |
26.63 |
| 2026-10-06 00:00 |
06:02:17.25 |
+64:13:06.4 |
HIP 28914 |
26.87 |
| 2026-10-06 12:00 |
06:02:15.93 |
+64:13:28.4 |
HIP 28914 |
27.12 |
| 2026-10-07 00:00 |
06:02:14.57 |
+64:13:50.4 |
HIP 28914 |
27.37 |
| 2026-10-07 12:00 |
06:02:13.15 |
+64:14:12.4 |
HIP 28914 |
27.64 |
| 2026-10-08 00:00 |
06:02:11.69 |
+64:14:34.3 |
HIP 28914 |
27.91 |
| 2026-10-08 12:00 |
06:02:10.18 |
+64:14:56.1 |
HIP 28914 |
28.19 |
| 2026-10-09 00:00 |
06:02:08.62 |
+64:15:18.0 |
HIP 28914 |
28.48 |
| 2026-10-09 12:00 |
06:02:07.01 |
+64:15:39.7 |
HIP 28914 |
28.77 |
| 2026-10-10 00:00 |
06:02:05.36 |
+64:16:01.5 |
HIP 28914 |
29.07 |
| 2026-10-10 12:00 |
06:02:03.65 |
+64:16:23.1 |
HIP 28914 |
29.38 |
| 2026-10-11 00:00 |
06:02:01.90 |
+64:16:44.7 |
HIP 28914 |
29.69 |