| Parameter |
Value |
| Designation |
P/2000 R2 (LINEAR) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2000-09-12T15:47:05.478720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:05Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
19.300 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2000-09-20.0000000 |
| e |
0.58365455 |
| q (au) |
1.389967 |
| a (au) |
3.338494 |
| i (deg) |
3.216342 |
| Ω (om, deg) |
187.499425 |
| ω (w, deg) |
147.063490 |
| M (ma, deg) |
1.186343 |
Magnitude
Scatter + Global Linear
$$
M_a = (19.097 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
19.097 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.987 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
04:06:50.01 |
+12:44:04.6 |
HIP 19180 |
25.47 |
| 2026-06-01 12:00 |
04:07:49.28 |
+12:46:19.4 |
HIP 19325 |
27.90 |
| 2026-06-02 00:00 |
04:08:48.45 |
+12:48:32.5 |
HIP 19325 |
28.55 |
| 2026-06-02 12:00 |
04:09:47.54 |
+12:50:44.0 |
HIP 19376 |
35.00 |
| 2026-06-03 00:00 |
04:10:46.53 |
+12:52:53.9 |
HIP 19649 |
37.22 |
| 2026-06-03 12:00 |
04:11:45.44 |
+12:55:02.1 |
HIP 19649 |
30.44 |
| 2026-06-04 00:00 |
04:12:44.26 |
+12:57:08.6 |
HIP 19736 |
19.94 |
| 2026-06-04 12:00 |
04:13:42.99 |
+12:59:13.6 |
HIP 19736 |
14.10 |
| 2026-06-05 00:00 |
04:14:41.62 |
+13:01:16.8 |
HIP 19808 |
3.21 |
| 2026-06-05 12:00 |
04:15:40.17 |
+13:03:18.5 |
HIP 19808 |
11.76 |
| 2026-06-06 00:00 |
04:16:38.63 |
+13:05:18.4 |
HIP 19808 |
26.08 |
| 2026-06-06 12:00 |
04:17:36.99 |
+13:07:16.8 |
HIP 20204 |
31.80 |
| 2026-06-07 00:00 |
04:18:35.27 |
+13:09:13.5 |
HIP 20204 |
18.01 |
| 2026-06-07 12:00 |
04:19:33.45 |
+13:11:08.6 |
HIP 20204 |
6.88 |
| 2026-06-08 00:00 |
04:20:31.55 |
+13:13:02.1 |
HIP 20204 |
13.35 |
| 2026-06-08 12:00 |
04:21:29.55 |
+13:14:53.9 |
HIP 20371 |
20.56 |
| 2026-06-09 00:00 |
04:22:27.45 |
+13:16:44.1 |
HIP 20371 |
21.02 |
| 2026-06-09 12:00 |
04:23:25.27 |
+13:18:32.7 |
HIP 20540 |
22.34 |
| 2026-06-10 00:00 |
04:24:22.99 |
+13:20:19.6 |
HIP 20540 |
22.43 |
| 2026-06-10 12:00 |
04:25:20.62 |
+13:22:05.0 |
HIP 20762 |
26.64 |
| 2026-06-11 00:00 |
04:26:18.15 |
+13:23:48.7 |
HIP 20762 |
17.84 |
| 2026-06-11 12:00 |
04:27:15.59 |
+13:25:30.8 |
HIP 20762 |
17.98 |
| 2026-06-12 00:00 |
04:28:12.94 |
+13:27:11.3 |
HIP 20850 |
24.98 |
| 2026-06-12 12:00 |
04:29:10.18 |
+13:28:50.2 |
HIP 20952 |
25.44 |
| 2026-06-13 00:00 |
04:30:07.34 |
+13:30:27.4 |
HIP 21036 |
14.91 |
| 2026-06-13 12:00 |
04:31:04.39 |
+13:32:03.1 |
HIP 21036 |
13.18 |
| 2026-06-14 00:00 |
04:32:01.35 |
+13:33:37.1 |
HIP 21112 |
22.01 |
| 2026-06-14 12:00 |
04:32:58.21 |
+13:35:09.6 |
HIP 21267 |
23.24 |
| 2026-06-15 00:00 |
04:33:54.97 |
+13:36:40.5 |
HIP 21267 |
21.65 |
| 2026-06-15 12:00 |
04:34:51.63 |
+13:38:09.7 |
HIP 21267 |
27.95 |
| 2026-06-16 00:00 |
04:35:48.19 |
+13:39:37.4 |
HIP 21533 |
28.19 |
| 2026-06-16 12:00 |
04:36:44.65 |
+13:41:03.5 |
HIP 21533 |
17.23 |
| 2026-06-17 00:00 |
04:37:41.01 |
+13:42:27.9 |
HIP 21533 |
13.39 |
| 2026-06-17 12:00 |
04:38:37.27 |
+13:43:50.8 |
HIP 21533 |
20.97 |
| 2026-06-18 00:00 |
04:39:33.42 |
+13:45:12.2 |
HIP 21654 |
22.88 |
| 2026-06-18 12:00 |
04:40:29.47 |
+13:46:31.9 |
HIP 21654 |
29.88 |
| 2026-06-19 00:00 |
04:41:25.42 |
+13:47:50.1 |
HIP 21864 |
33.15 |
| 2026-06-19 12:00 |
04:42:21.26 |
+13:49:06.7 |
HIP 21864 |
30.75 |
| 2026-06-20 00:00 |
04:43:17.00 |
+13:50:21.8 |
HIP 21864 |
34.09 |
| 2026-06-20 12:00 |
04:44:12.64 |
+13:51:35.3 |
HIP 22183 |
31.21 |
| 2026-06-21 00:00 |
04:45:08.16 |
+13:52:47.2 |
HIP 22183 |
17.87 |
| 2026-06-21 12:00 |
04:46:03.59 |
+13:53:57.6 |
HIP 22183 |
5.59 |
| 2026-06-22 00:00 |
04:46:58.90 |
+13:55:06.5 |
HIP 22183 |
10.34 |