| Parameter |
Value |
| Designation |
C/2000 U5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-03-13T14:08:55.055040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:08Z |
| Obs used |
288 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
10.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2000-12-17.0000000 |
| e |
1.00537571 |
| q (au) |
3.486197 |
| a (au) |
-648.509659 |
| i (deg) |
93.652917 |
| Ω (om, deg) |
65.294538 |
| ω (w, deg) |
299.022540 |
| M (ma, deg) |
0.016616 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.464 + 2.318\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.464 |
| n |
2.318 |
| gf |
1.000 |
| gb |
-0.824 |
| 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) |
| 2026-03-26 00:00 |
19:01:59.52 |
+67:41:40.3 |
HIP 93517 |
38.06 |
| 2026-03-26 12:00 |
19:02:00.40 |
+67:42:16.1 |
HIP 93517 |
37.45 |
| 2026-03-27 00:00 |
19:02:01.23 |
+67:42:52.0 |
HIP 93517 |
36.85 |
| 2026-03-27 12:00 |
19:02:02.00 |
+67:43:28.0 |
HIP 93517 |
36.25 |
| 2026-03-28 00:00 |
19:02:02.71 |
+67:44:04.0 |
HIP 93517 |
35.64 |
| 2026-03-28 12:00 |
19:02:03.37 |
+67:44:40.0 |
HIP 93517 |
35.04 |
| 2026-03-29 00:00 |
19:02:03.97 |
+67:45:16.1 |
HIP 93517 |
34.44 |
| 2026-03-29 12:00 |
19:02:04.52 |
+67:45:52.2 |
HIP 93517 |
33.83 |
| 2026-03-30 00:00 |
19:02:05.01 |
+67:46:28.3 |
HIP 93517 |
33.23 |
| 2026-03-30 12:00 |
19:02:05.44 |
+67:47:04.5 |
HIP 93517 |
32.62 |
| 2026-03-31 00:00 |
19:02:05.82 |
+67:47:40.6 |
HIP 93517 |
32.02 |
| 2026-03-31 12:00 |
19:02:06.14 |
+67:48:16.8 |
HIP 93517 |
31.42 |
| 2026-04-01 00:00 |
19:02:06.40 |
+67:48:53.0 |
HIP 93517 |
30.82 |
| 2026-04-01 12:00 |
19:02:06.60 |
+67:49:29.3 |
HIP 93517 |
30.21 |
| 2026-04-02 00:00 |
19:02:06.75 |
+67:50:05.5 |
HIP 93517 |
29.61 |
| 2026-04-02 12:00 |
19:02:06.84 |
+67:50:41.8 |
HIP 93517 |
29.01 |
| 2026-04-03 00:00 |
19:02:06.88 |
+67:51:18.0 |
HIP 93517 |
28.41 |
| 2026-04-03 12:00 |
19:02:06.86 |
+67:51:54.3 |
HIP 93517 |
27.81 |
| 2026-04-04 00:00 |
19:02:06.78 |
+67:52:30.6 |
HIP 93517 |
27.21 |
| 2026-04-04 12:00 |
19:02:06.64 |
+67:53:06.9 |
HIP 93517 |
26.61 |
| 2026-04-05 00:00 |
19:02:06.44 |
+67:53:43.1 |
HIP 93517 |
26.02 |
| 2026-04-05 12:00 |
19:02:06.19 |
+67:54:19.4 |
HIP 93517 |
25.42 |
| 2026-04-06 00:00 |
19:02:05.88 |
+67:54:55.7 |
HIP 93517 |
24.82 |
| 2026-04-06 12:00 |
19:02:05.52 |
+67:55:31.9 |
HIP 93517 |
24.23 |
| 2026-04-07 00:00 |
19:02:05.09 |
+67:56:08.1 |
HIP 93517 |
23.64 |
| 2026-04-07 12:00 |
19:02:04.61 |
+67:56:44.4 |
HIP 93517 |
23.05 |
| 2026-04-08 00:00 |
19:02:04.07 |
+67:57:20.6 |
HIP 93517 |
22.46 |
| 2026-04-08 12:00 |
19:02:03.47 |
+67:57:56.8 |
HIP 93517 |
21.88 |
| 2026-04-09 00:00 |
19:02:02.81 |
+67:58:32.9 |
HIP 93517 |
21.29 |
| 2026-04-09 12:00 |
19:02:02.10 |
+67:59:09.0 |
HIP 93517 |
20.71 |
| 2026-04-10 00:00 |
19:02:01.33 |
+67:59:45.1 |
HIP 93517 |
20.13 |
| 2026-04-10 12:00 |
19:02:00.50 |
+68:00:21.2 |
HIP 93517 |
19.56 |
| 2026-04-11 00:00 |
19:01:59.61 |
+68:00:57.2 |
HIP 93517 |
18.99 |
| 2026-04-11 12:00 |
19:01:58.67 |
+68:01:33.2 |
HIP 93517 |
18.42 |
| 2026-04-12 00:00 |
19:01:57.66 |
+68:02:09.2 |
HIP 93517 |
17.86 |
| 2026-04-12 12:00 |
19:01:56.60 |
+68:02:45.1 |
HIP 93517 |
17.30 |
| 2026-04-13 00:00 |
19:01:55.48 |
+68:03:21.0 |
HIP 93517 |
16.75 |
| 2026-04-13 12:00 |
19:01:54.30 |
+68:03:56.8 |
HIP 93517 |
16.21 |
| 2026-04-14 00:00 |
19:01:53.07 |
+68:04:32.6 |
HIP 93517 |
15.67 |
| 2026-04-14 12:00 |
19:01:51.77 |
+68:05:08.3 |
HIP 93517 |
15.14 |
| 2026-04-15 00:00 |
19:01:50.42 |
+68:05:43.9 |
HIP 93517 |
14.62 |
| 2026-04-15 12:00 |
19:01:49.01 |
+68:06:19.5 |
HIP 93517 |
14.10 |
| 2026-04-16 00:00 |
19:01:47.54 |
+68:06:55.1 |
HIP 93517 |
13.60 |