| Parameter |
Value |
| Designation |
C/2001 RX14 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-01-18T16:52:12.123840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:11Z |
| Obs used |
3261 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
6.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2002-12-31.0000000 |
| e |
1.00160630 |
| q (au) |
2.057562 |
| a (au) |
-1280.933457 |
| i (deg) |
30.574145 |
| Ω (om, deg) |
14.169847 |
| ω (w, deg) |
121.485659 |
| M (ma, deg) |
-0.000402 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.044 + 3.284\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.044 |
| n |
3.284 |
| gf |
0.998 |
| gb |
-0.598 |
| k |
0.998 |
| δ90 |
9.993 |
| 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) |
| 2026-07-29 00:00 |
20:02:28.40 |
-52:14:17.8 |
HIP 98745 |
13.72 |
| 2026-07-29 12:00 |
20:02:24.33 |
-52:14:21.2 |
HIP 98745 |
14.07 |
| 2026-07-30 00:00 |
20:02:20.27 |
-52:14:24.4 |
HIP 98745 |
14.43 |
| 2026-07-30 12:00 |
20:02:16.22 |
-52:14:27.4 |
HIP 98745 |
14.82 |
| 2026-07-31 00:00 |
20:02:12.17 |
-52:14:30.2 |
HIP 98745 |
15.22 |
| 2026-07-31 12:00 |
20:02:08.13 |
-52:14:32.8 |
HIP 98745 |
15.64 |
| 2026-08-01 00:00 |
20:02:04.10 |
-52:14:35.2 |
HIP 98745 |
16.07 |
| 2026-08-01 12:00 |
20:02:00.07 |
-52:14:37.4 |
HIP 98745 |
16.51 |
| 2026-08-02 00:00 |
20:01:56.05 |
-52:14:39.4 |
HIP 98745 |
16.97 |
| 2026-08-02 12:00 |
20:01:52.03 |
-52:14:41.2 |
HIP 98745 |
17.44 |
| 2026-08-03 00:00 |
20:01:48.03 |
-52:14:42.8 |
HIP 98427 |
17.69 |
| 2026-08-03 12:00 |
20:01:44.03 |
-52:14:44.3 |
HIP 98427 |
17.10 |
| 2026-08-04 00:00 |
20:01:40.04 |
-52:14:45.5 |
HIP 98427 |
16.51 |
| 2026-08-04 12:00 |
20:01:36.06 |
-52:14:46.5 |
HIP 98427 |
15.93 |
| 2026-08-05 00:00 |
20:01:32.09 |
-52:14:47.4 |
HIP 98427 |
15.34 |
| 2026-08-05 12:00 |
20:01:28.13 |
-52:14:48.0 |
HIP 98427 |
14.76 |
| 2026-08-06 00:00 |
20:01:24.18 |
-52:14:48.5 |
HIP 98427 |
14.18 |
| 2026-08-06 12:00 |
20:01:20.23 |
-52:14:48.7 |
HIP 98427 |
13.60 |
| 2026-08-07 00:00 |
20:01:16.30 |
-52:14:48.8 |
HIP 98427 |
13.03 |
| 2026-08-07 12:00 |
20:01:12.38 |
-52:14:48.6 |
HIP 98427 |
12.46 |
| 2026-08-08 00:00 |
20:01:08.47 |
-52:14:48.3 |
HIP 98427 |
11.89 |
| 2026-08-08 12:00 |
20:01:04.57 |
-52:14:47.7 |
HIP 98427 |
11.33 |
| 2026-08-09 00:00 |
20:01:00.68 |
-52:14:47.0 |
HIP 98427 |
10.77 |
| 2026-08-09 12:00 |
20:00:56.81 |
-52:14:46.1 |
HIP 98427 |
10.22 |
| 2026-08-10 00:00 |
20:00:52.94 |
-52:14:44.9 |
HIP 98427 |
9.67 |
| 2026-08-10 12:00 |
20:00:49.09 |
-52:14:43.6 |
HIP 98427 |
9.12 |
| 2026-08-11 00:00 |
20:00:45.26 |
-52:14:42.1 |
HIP 98427 |
8.58 |
| 2026-08-11 12:00 |
20:00:41.43 |
-52:14:40.3 |
HIP 98427 |
8.05 |
| 2026-08-12 00:00 |
20:00:37.62 |
-52:14:38.4 |
HIP 98427 |
7.53 |
| 2026-08-12 12:00 |
20:00:33.83 |
-52:14:36.3 |
HIP 98427 |
7.02 |
| 2026-08-13 00:00 |
20:00:30.05 |
-52:14:34.0 |
HIP 98427 |
6.52 |
| 2026-08-13 12:00 |
20:00:26.28 |
-52:14:31.5 |
HIP 98427 |
6.03 |
| 2026-08-14 00:00 |
20:00:22.53 |
-52:14:28.8 |
HIP 98427 |
5.56 |
| 2026-08-14 12:00 |
20:00:18.79 |
-52:14:25.9 |
HIP 98427 |
5.12 |
| 2026-08-15 00:00 |
20:00:15.07 |
-52:14:22.8 |
HIP 98427 |
4.70 |
| 2026-08-15 12:00 |
20:00:11.37 |
-52:14:19.5 |
HIP 98427 |
4.31 |
| 2026-08-16 00:00 |
20:00:07.68 |
-52:14:16.0 |
HIP 98427 |
3.96 |
| 2026-08-16 12:00 |
20:00:04.01 |
-52:14:12.3 |
HIP 98427 |
3.67 |
| 2026-08-17 00:00 |
20:00:00.35 |
-52:14:08.4 |
HIP 98427 |
3.45 |
| 2026-08-17 12:00 |
19:59:56.72 |
-52:14:04.4 |
HIP 98427 |
3.30 |
| 2026-08-18 00:00 |
19:59:53.10 |
-52:14:00.1 |
HIP 98427 |
3.24 |
| 2026-08-18 12:00 |
19:59:49.49 |
-52:13:55.6 |
HIP 98427 |
3.28 |
| 2026-08-19 00:00 |
19:59:45.91 |
-52:13:51.0 |
HIP 98427 |
3.40 |