| Parameter |
Value |
| Designation |
C/2013 V3 (Nevski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-10-29T21:44:27.254400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:42Z |
| Obs used |
904 |
| NEO |
- |
| M1 |
15.400 |
| K1 |
5.750 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-12-03.0000000 |
| e |
0.89097069 |
| q (au) |
1.386694 |
| a (au) |
12.718543 |
| i (deg) |
32.134529 |
| Ω (om, deg) |
100.918155 |
| ω (w, deg) |
339.643363 |
| M (ma, deg) |
0.740845 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.738 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.738 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
| 2013-11-06 |
2014-03-08 |
+8.9180 |
-2.644 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
17:00:56.42 |
-05:45:24.6 |
HIP 83145 |
21.76 |
| 2026-05-12 12:00 |
17:00:51.47 |
-05:45:09.5 |
HIP 83145 |
20.60 |
| 2026-05-13 00:00 |
17:00:46.50 |
-05:44:54.7 |
HIP 83145 |
19.46 |
| 2026-05-13 12:00 |
17:00:41.50 |
-05:44:40.0 |
HIP 83145 |
18.32 |
| 2026-05-14 00:00 |
17:00:36.48 |
-05:44:25.4 |
HIP 83145 |
17.19 |
| 2026-05-14 12:00 |
17:00:31.45 |
-05:44:11.1 |
HIP 83145 |
16.08 |
| 2026-05-15 00:00 |
17:00:26.39 |
-05:43:56.9 |
HIP 83145 |
14.99 |
| 2026-05-15 12:00 |
17:00:21.31 |
-05:43:42.8 |
HIP 83145 |
13.92 |
| 2026-05-16 00:00 |
17:00:16.21 |
-05:43:29.0 |
HIP 83145 |
12.89 |
| 2026-05-16 12:00 |
17:00:11.09 |
-05:43:15.3 |
HIP 83145 |
11.91 |
| 2026-05-17 00:00 |
17:00:05.95 |
-05:43:01.8 |
HIP 83145 |
10.98 |
| 2026-05-17 12:00 |
17:00:00.79 |
-05:42:48.5 |
HIP 83145 |
10.13 |
| 2026-05-18 00:00 |
16:59:55.62 |
-05:42:35.3 |
HIP 83145 |
9.38 |
| 2026-05-18 12:00 |
16:59:50.43 |
-05:42:22.3 |
HIP 83145 |
8.76 |
| 2026-05-19 00:00 |
16:59:45.22 |
-05:42:09.6 |
HIP 83145 |
8.29 |
| 2026-05-19 12:00 |
16:59:39.99 |
-05:41:57.0 |
HIP 83145 |
8.01 |
| 2026-05-20 00:00 |
16:59:34.75 |
-05:41:44.5 |
HIP 83145 |
7.93 |
| 2026-05-20 12:00 |
16:59:29.49 |
-05:41:32.3 |
HIP 83145 |
8.07 |
| 2026-05-21 00:00 |
16:59:24.22 |
-05:41:20.2 |
HIP 83145 |
8.42 |
| 2026-05-21 12:00 |
16:59:18.93 |
-05:41:08.4 |
HIP 83145 |
8.95 |
| 2026-05-22 00:00 |
16:59:13.63 |
-05:40:56.7 |
HIP 83145 |
9.63 |
| 2026-05-22 12:00 |
16:59:08.31 |
-05:40:45.2 |
HIP 83145 |
10.44 |
| 2026-05-23 00:00 |
16:59:02.98 |
-05:40:33.9 |
HIP 83145 |
11.35 |
| 2026-05-23 12:00 |
16:58:57.64 |
-05:40:22.8 |
HIP 83145 |
12.34 |
| 2026-05-24 00:00 |
16:58:52.29 |
-05:40:11.9 |
HIP 83145 |
13.39 |
| 2026-05-24 12:00 |
16:58:46.93 |
-05:40:01.2 |
HIP 83145 |
14.48 |
| 2026-05-25 00:00 |
16:58:41.55 |
-05:39:50.7 |
HIP 83145 |
15.62 |
| 2026-05-25 12:00 |
16:58:36.16 |
-05:39:40.4 |
HIP 83145 |
16.79 |
| 2026-05-26 00:00 |
16:58:30.76 |
-05:39:30.2 |
HIP 83145 |
17.98 |
| 2026-05-26 12:00 |
16:58:25.36 |
-05:39:20.3 |
HIP 82961 |
18.24 |
| 2026-05-27 00:00 |
16:58:19.94 |
-05:39:10.6 |
HIP 82961 |
16.91 |
| 2026-05-27 12:00 |
16:58:14.51 |
-05:39:01.1 |
HIP 82961 |
15.59 |
| 2026-05-28 00:00 |
16:58:09.08 |
-05:38:51.7 |
HIP 82961 |
14.27 |
| 2026-05-28 12:00 |
16:58:03.64 |
-05:38:42.6 |
HIP 82961 |
12.96 |
| 2026-05-29 00:00 |
16:57:58.19 |
-05:38:33.7 |
HIP 82961 |
11.66 |
| 2026-05-29 12:00 |
16:57:52.73 |
-05:38:24.9 |
HIP 82961 |
10.36 |
| 2026-05-30 00:00 |
16:57:47.26 |
-05:38:16.4 |
HIP 82961 |
9.09 |
| 2026-05-30 12:00 |
16:57:41.79 |
-05:38:08.1 |
HIP 82961 |
7.85 |
| 2026-05-31 00:00 |
16:57:36.32 |
-05:38:00.0 |
HIP 82961 |
6.65 |
| 2026-05-31 12:00 |
16:57:30.83 |
-05:37:52.1 |
HIP 82961 |
5.54 |
| 2026-06-01 00:00 |
16:57:25.35 |
-05:37:44.4 |
HIP 82961 |
4.55 |
| 2026-06-01 12:00 |
16:57:19.86 |
-05:37:36.9 |
HIP 82961 |
3.81 |
| 2026-06-02 00:00 |
16:57:14.36 |
-05:37:29.6 |
HIP 82961 |
3.48 |