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) |
|---|---|---|---|---|
| 2026-07-29 00:00 | 13:36:27.06 | -04:43:28.5 | HIP 66450 | 14.57 |
| 2026-07-29 12:00 | 13:36:31.58 | -04:44:11.6 | HIP 66450 | 13.27 |
| 2026-07-30 00:00 | 13:36:36.19 | -04:44:55.2 | HIP 66450 | 11.96 |
| 2026-07-30 12:00 | 13:36:40.88 | -04:45:39.2 | HIP 66450 | 10.64 |
| 2026-07-31 00:00 | 13:36:45.67 | -04:46:23.7 | HIP 66450 | 9.32 |
| 2026-07-31 12:00 | 13:36:50.54 | -04:47:08.6 | HIP 66450 | 7.99 |
| 2026-08-01 00:00 | 13:36:55.49 | -04:47:54.0 | HIP 66450 | 6.69 |
| 2026-08-01 12:00 | 13:37:00.53 | -04:48:39.8 | HIP 66450 | 5.44 |
| 2026-08-02 00:00 | 13:37:05.66 | -04:49:26.0 | HIP 66450 | 4.32 |
| 2026-08-02 12:00 | 13:37:10.88 | -04:50:12.7 | HIP 66450 | 3.46 |
| 2026-08-03 00:00 | 13:37:16.18 | -04:50:59.8 | HIP 66450 | 3.15 |
| 2026-08-03 12:00 | 13:37:21.57 | -04:51:47.3 | HIP 66450 | 3.55 |
| 2026-08-04 00:00 | 13:37:27.04 | -04:52:35.3 | HIP 66450 | 4.50 |
| 2026-08-04 12:00 | 13:37:32.59 | -04:53:23.6 | HIP 66450 | 5.75 |
| 2026-08-05 00:00 | 13:37:38.23 | -04:54:12.4 | HIP 66450 | 7.16 |
| 2026-08-05 12:00 | 13:37:43.96 | -04:55:01.6 | HIP 66450 | 8.67 |
| 2026-08-06 00:00 | 13:37:49.76 | -04:55:51.3 | HIP 66450 | 10.23 |
| 2026-08-06 12:00 | 13:37:55.65 | -04:56:41.3 | HIP 66450 | 11.85 |
| 2026-08-07 00:00 | 13:38:01.63 | -04:57:31.8 | HIP 66450 | 13.50 |
| 2026-08-07 12:00 | 13:38:07.69 | -04:58:22.6 | HIP 66450 | 15.18 |
| 2026-08-08 00:00 | 13:38:13.82 | -04:59:13.9 | HIP 66450 | 16.89 |
| 2026-08-08 12:00 | 13:38:20.05 | -05:00:05.5 | HIP 66450 | 18.63 |
| 2026-08-09 00:00 | 13:38:26.35 | -05:00:57.6 | HIP 66450 | 20.40 |
| 2026-08-09 12:00 | 13:38:32.73 | -05:01:50.0 | HIP 66450 | 22.19 |
| 2026-08-10 00:00 | 13:38:39.20 | -05:02:42.9 | HIP 66450 | 24.00 |
| 2026-08-10 12:00 | 13:38:45.75 | -05:03:36.1 | HIP 66450 | 25.84 |
| 2026-08-11 00:00 | 13:38:52.37 | -05:04:29.7 | HIP 66706 | 25.28 |
| 2026-08-11 12:00 | 13:38:59.08 | -05:05:23.7 | HIP 66706 | 23.39 |
| 2026-08-12 00:00 | 13:39:05.87 | -05:06:18.0 | HIP 66706 | 21.48 |
| 2026-08-12 12:00 | 13:39:12.73 | -05:07:12.8 | HIP 66706 | 19.55 |
| 2026-08-13 00:00 | 13:39:19.68 | -05:08:07.9 | HIP 66706 | 17.60 |
| 2026-08-13 12:00 | 13:39:26.70 | -05:09:03.4 | HIP 66706 | 15.64 |
| 2026-08-14 00:00 | 13:39:33.80 | -05:09:59.2 | HIP 66706 | 13.65 |
| 2026-08-14 12:00 | 13:39:40.98 | -05:10:55.4 | HIP 66706 | 11.65 |
| 2026-08-15 00:00 | 13:39:48.23 | -05:11:51.9 | HIP 66706 | 9.65 |
| 2026-08-15 12:00 | 13:39:55.56 | -05:12:48.8 | HIP 66706 | 7.63 |
| 2026-08-16 00:00 | 13:40:02.97 | -05:13:46.0 | HIP 66706 | 5.63 |
| 2026-08-16 12:00 | 13:40:10.45 | -05:14:43.6 | HIP 66706 | 3.68 |
| 2026-08-17 00:00 | 13:40:18.01 | -05:15:41.5 | HIP 66706 | 2.05 |
| 2026-08-17 12:00 | 13:40:25.64 | -05:16:39.8 | HIP 66706 | 1.95 |
| 2026-08-18 00:00 | 13:40:33.34 | -05:17:38.4 | HIP 66706 | 3.55 |
| 2026-08-18 12:00 | 13:40:41.12 | -05:18:37.3 | HIP 66706 | 5.56 |
| 2026-08-19 00:00 | 13:40:48.97 | -05:19:36.5 | HIP 66706 | 7.67 |