| Parameter |
Value |
| Designation |
C/2010 R1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-05-18T21:25:42.430080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:45Z |
| Obs used |
1572 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-06-07.0000000 |
| e |
1.00366507 |
| q (au) |
5.621418 |
| a (au) |
-1533.782641 |
| i (deg) |
156.933369 |
| Ω (om, deg) |
343.649659 |
| ω (w, deg) |
114.496039 |
| M (ma, deg) |
0.000314 |
Magnitude
Scatter + Global Linear
$$
M_a = (2.395 + 5.854\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
2.395 |
| n |
5.854 |
| gf |
0.835 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.001 |
| 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 |
06:46:36.14 |
+02:46:36.3 |
HIP 32430 |
9.99 |
| 2026-03-26 12:00 |
06:46:35.19 |
+02:46:58.0 |
HIP 32430 |
10.12 |
| 2026-03-27 00:00 |
06:46:34.28 |
+02:47:19.7 |
HIP 32430 |
10.26 |
| 2026-03-27 12:00 |
06:46:33.41 |
+02:47:41.4 |
HIP 32430 |
10.43 |
| 2026-03-28 00:00 |
06:46:32.58 |
+02:48:03.0 |
HIP 32430 |
10.61 |
| 2026-03-28 12:00 |
06:46:31.78 |
+02:48:24.5 |
HIP 32430 |
10.81 |
| 2026-03-29 00:00 |
06:46:31.01 |
+02:48:46.0 |
HIP 32430 |
11.03 |
| 2026-03-29 12:00 |
06:46:30.29 |
+02:49:07.5 |
HIP 32430 |
11.26 |
| 2026-03-30 00:00 |
06:46:29.60 |
+02:49:28.9 |
HIP 32430 |
11.50 |
| 2026-03-30 12:00 |
06:46:28.95 |
+02:49:50.2 |
HIP 32430 |
11.75 |
| 2026-03-31 00:00 |
06:46:28.34 |
+02:50:11.5 |
HIP 32430 |
12.02 |
| 2026-03-31 12:00 |
06:46:27.76 |
+02:50:32.8 |
HIP 32430 |
12.29 |
| 2026-04-01 00:00 |
06:46:27.22 |
+02:50:54.0 |
HIP 32430 |
12.57 |
| 2026-04-01 12:00 |
06:46:26.72 |
+02:51:15.1 |
HIP 32430 |
12.86 |
| 2026-04-02 00:00 |
06:46:26.25 |
+02:51:36.2 |
HIP 32430 |
13.15 |
| 2026-04-02 12:00 |
06:46:25.82 |
+02:51:57.2 |
HIP 32430 |
13.45 |
| 2026-04-03 00:00 |
06:46:25.42 |
+02:52:18.1 |
HIP 32430 |
13.76 |
| 2026-04-03 12:00 |
06:46:25.07 |
+02:52:39.0 |
HIP 32430 |
14.07 |
| 2026-04-04 00:00 |
06:46:24.74 |
+02:52:59.8 |
HIP 32430 |
14.38 |
| 2026-04-04 12:00 |
06:46:24.46 |
+02:53:20.6 |
HIP 32430 |
14.70 |
| 2026-04-05 00:00 |
06:46:24.21 |
+02:53:41.3 |
HIP 32430 |
15.02 |
| 2026-04-05 12:00 |
06:46:24.00 |
+02:54:01.9 |
HIP 32430 |
15.34 |
| 2026-04-06 00:00 |
06:46:23.82 |
+02:54:22.5 |
HIP 32430 |
15.66 |
| 2026-04-06 12:00 |
06:46:23.68 |
+02:54:43.0 |
HIP 32430 |
15.99 |
| 2026-04-07 00:00 |
06:46:23.58 |
+02:55:03.4 |
HIP 32430 |
16.31 |
| 2026-04-07 12:00 |
06:46:23.51 |
+02:55:23.7 |
HIP 32430 |
16.64 |
| 2026-04-08 00:00 |
06:46:23.48 |
+02:55:44.0 |
HIP 32430 |
16.97 |
| 2026-04-08 12:00 |
06:46:23.48 |
+02:56:04.1 |
HIP 32430 |
17.30 |
| 2026-04-09 00:00 |
06:46:23.52 |
+02:56:24.2 |
HIP 32430 |
17.63 |
| 2026-04-09 12:00 |
06:46:23.59 |
+02:56:44.3 |
HIP 32430 |
17.96 |
| 2026-04-10 00:00 |
06:46:23.70 |
+02:57:04.2 |
HIP 32430 |
18.29 |
| 2026-04-10 12:00 |
06:46:23.85 |
+02:57:24.1 |
HIP 32430 |
18.62 |
| 2026-04-11 00:00 |
06:46:24.03 |
+02:57:43.8 |
HIP 32430 |
18.96 |
| 2026-04-11 12:00 |
06:46:24.25 |
+02:58:03.5 |
HIP 32430 |
19.29 |
| 2026-04-12 00:00 |
06:46:24.50 |
+02:58:23.1 |
HIP 32430 |
19.62 |
| 2026-04-12 12:00 |
06:46:24.79 |
+02:58:42.6 |
HIP 32430 |
19.95 |
| 2026-04-13 00:00 |
06:46:25.11 |
+02:59:02.1 |
HIP 32430 |
20.29 |
| 2026-04-13 12:00 |
06:46:25.47 |
+02:59:21.4 |
HIP 32430 |
20.62 |
| 2026-04-14 00:00 |
06:46:25.86 |
+02:59:40.6 |
HIP 32430 |
20.95 |
| 2026-04-14 12:00 |
06:46:26.29 |
+02:59:59.8 |
HIP 32430 |
21.29 |
| 2026-04-15 00:00 |
06:46:26.75 |
+03:00:18.8 |
HIP 32430 |
21.62 |
| 2026-04-15 12:00 |
06:46:27.25 |
+03:00:37.8 |
HIP 32430 |
21.96 |
| 2026-04-16 00:00 |
06:46:27.78 |
+03:00:56.6 |
HIP 32430 |
22.29 |