101P/Chernykh
Metadata
| Parameter | Value |
|---|---|
| Designation | 101P/Chernykh |
| Type | P |
| Perihelion (tp_cal, UTC) | 2020-01-07T18:38:07.975680Z |
| Orbit solution date (soln_date, UTC) | 2024-08-26T10:57:16Z |
| Obs used | 1211 |
| NEO | - |
| M1 | 13.700 |
| K1 | 4.500 |
| PC | - |
Osculating Elements
| Parameter | Value |
|---|---|
| Epoch (epoch_cal, TDB) | 2014-10-13.0000000 |
| e | 0.59774254 |
| q (au) | 2.325778 |
| a (au) | 5.781815 |
| i (deg) | 5.033943 |
| Ω (om, deg) | 116.589097 |
| ω (w, deg) | 277.434541 |
| M (ma, deg) | 224.396168 |
Magnitude
Scatter + Global Linear
$$ M_a = (12.453 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
Model Parameters
| Parameter | Value |
|---|---|
| H0 | 12.453 |
| n | 2.000 |
| gf | 1.000 |
| gb | -0.997 |
| k | 1.000 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) | End (UTC) | a | b |
|---|---|---|---|
| 2019-07-04 | 2020-01-07 | +34.8196 | -13.263 |
| 2020-01-08 | 2021-01-03 | +3.7173 | -2.221 |
| 2021-01-03 | 2022-03-01 | +4.6114 | -3.220 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Finding Chart
Ephemeris
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-03-26 00:00 | 13:59:55.59 | -06:15:18.8 | HIP 68301 | 24.27 |
| 2026-03-26 12:00 | 13:59:46.44 | -06:14:19.2 | HIP 68301 | 23.71 |
| 2026-03-27 00:00 | 13:59:37.23 | -06:13:19.3 | HIP 68301 | 23.40 |
| 2026-03-27 12:00 | 13:59:27.97 | -06:12:19.4 | HIP 68301 | 23.35 |
| 2026-03-28 00:00 | 13:59:18.65 | -06:11:19.2 | HIP 68301 | 23.57 |
| 2026-03-28 12:00 | 13:59:09.27 | -06:10:18.9 | HIP 68301 | 24.06 |
| 2026-03-29 00:00 | 13:58:59.85 | -06:09:18.5 | HIP 68301 | 24.79 |
| 2026-03-29 12:00 | 13:58:50.36 | -06:08:18.0 | HIP 68301 | 25.76 |
| 2026-03-30 00:00 | 13:58:40.83 | -06:07:17.3 | HIP 68301 | 26.95 |
| 2026-03-30 12:00 | 13:58:31.25 | -06:06:16.5 | HIP 68301 | 28.32 |
| 2026-03-31 00:00 | 13:58:21.61 | -06:05:15.6 | HIP 68301 | 29.86 |
| 2026-03-31 12:00 | 13:58:11.93 | -06:04:14.6 | HIP 68301 | 31.55 |
| 2026-04-01 00:00 | 13:58:02.20 | -06:03:13.5 | HIP 68083 | 32.75 |
| 2026-04-01 12:00 | 13:57:52.43 | -06:02:12.3 | HIP 68083 | 31.68 |
| 2026-04-02 00:00 | 13:57:42.61 | -06:01:11.0 | HIP 68083 | 30.79 |
| 2026-04-02 12:00 | 13:57:32.74 | -06:00:09.6 | HIP 68083 | 30.10 |
| 2026-04-03 00:00 | 13:57:22.84 | -05:59:08.2 | HIP 68083 | 29.63 |
| 2026-04-03 12:00 | 13:57:12.89 | -05:58:06.7 | HIP 68083 | 29.39 |
| 2026-04-04 00:00 | 13:57:02.90 | -05:57:05.1 | HIP 68083 | 29.40 |
| 2026-04-04 12:00 | 13:56:52.87 | -05:56:03.5 | HIP 67949 | 29.13 |
| 2026-04-05 00:00 | 13:56:42.80 | -05:55:01.9 | HIP 67949 | 26.53 |
| 2026-04-05 12:00 | 13:56:32.70 | -05:54:00.2 | HIP 67949 | 23.95 |
| 2026-04-06 00:00 | 13:56:22.56 | -05:52:58.5 | HIP 67949 | 21.38 |
| 2026-04-06 12:00 | 13:56:12.38 | -05:51:56.7 | HIP 67949 | 18.86 |
| 2026-04-07 00:00 | 13:56:02.17 | -05:50:54.9 | HIP 67949 | 16.40 |
| 2026-04-07 12:00 | 13:55:51.93 | -05:49:53.2 | HIP 67949 | 14.02 |
| 2026-04-08 00:00 | 13:55:41.66 | -05:48:51.4 | HIP 67949 | 11.81 |
| 2026-04-08 12:00 | 13:55:31.35 | -05:47:49.6 | HIP 67949 | 9.86 |
| 2026-04-09 00:00 | 13:55:21.02 | -05:46:47.8 | HIP 67949 | 8.38 |
| 2026-04-09 12:00 | 13:55:10.66 | -05:45:46.1 | HIP 67949 | 7.65 |
| 2026-04-10 00:00 | 13:55:00.27 | -05:44:44.4 | HIP 67949 | 7.88 |
| 2026-04-10 12:00 | 13:54:49.86 | -05:43:42.7 | HIP 67949 | 9.01 |
| 2026-04-11 00:00 | 13:54:39.43 | -05:42:41.1 | HIP 67881 | 8.17 |
| 2026-04-11 12:00 | 13:54:28.97 | -05:41:39.5 | HIP 67881 | 6.66 |
| 2026-04-12 00:00 | 13:54:18.49 | -05:40:37.9 | HIP 67881 | 6.12 |
| 2026-04-12 12:00 | 13:54:07.99 | -05:39:36.5 | HIP 67881 | 6.81 |
| 2026-04-13 00:00 | 13:53:57.47 | -05:38:35.1 | HIP 67881 | 8.42 |
| 2026-04-13 12:00 | 13:53:46.93 | -05:37:33.7 | HIP 67881 | 10.55 |
| 2026-04-14 00:00 | 13:53:36.38 | -05:36:32.5 | HIP 67881 | 12.95 |
| 2026-04-14 12:00 | 13:53:25.81 | -05:35:31.4 | HIP 67881 | 15.49 |
| 2026-04-15 00:00 | 13:53:15.23 | -05:34:30.3 | HIP 67881 | 18.11 |
| 2026-04-15 12:00 | 13:53:04.64 | -05:33:29.4 | HIP 67881 | 20.79 |
| 2026-04-16 00:00 | 13:52:54.03 | -05:32:28.6 | HIP 67881 | 23.50 |