| Parameter |
Value |
| Designation |
C/1960 Y1 (Candy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1961-02-10T23:12:09.239040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
8 |
| NEO |
Yes |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1961-01-09.0000000 |
| e |
0.93033662 |
| q (au) |
1.046719 |
| a (au) |
15.025379 |
| i (deg) |
151.174695 |
| Ω (om, deg) |
177.293253 |
| ω (w, deg) |
138.764838 |
| M (ma, deg) |
359.442118 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.452 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.452 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.546 |
| k |
0.800 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
14:53:46.09 |
-44:12:35.8 |
HIP 73024 |
19.34 |
| 2026-05-12 12:00 |
14:53:35.55 |
-44:11:57.5 |
HIP 73024 |
21.33 |
| 2026-05-13 00:00 |
14:53:25.03 |
-44:11:18.8 |
HIP 73024 |
23.32 |
| 2026-05-13 12:00 |
14:53:14.52 |
-44:10:39.6 |
HIP 72742 |
23.88 |
| 2026-05-14 00:00 |
14:53:04.03 |
-44:10:00.0 |
HIP 72742 |
22.53 |
| 2026-05-14 12:00 |
14:52:53.56 |
-44:09:19.9 |
HIP 72742 |
21.26 |
| 2026-05-15 00:00 |
14:52:43.10 |
-44:08:39.3 |
HIP 72742 |
20.11 |
| 2026-05-15 12:00 |
14:52:32.66 |
-44:07:58.3 |
HIP 72742 |
19.10 |
| 2026-05-16 00:00 |
14:52:22.24 |
-44:07:16.9 |
HIP 72742 |
18.23 |
| 2026-05-16 12:00 |
14:52:11.84 |
-44:06:35.0 |
HIP 72742 |
17.55 |
| 2026-05-17 00:00 |
14:52:01.46 |
-44:05:52.6 |
HIP 72742 |
17.07 |
| 2026-05-17 12:00 |
14:51:51.10 |
-44:05:09.9 |
HIP 72742 |
16.80 |
| 2026-05-18 00:00 |
14:51:40.76 |
-44:04:26.7 |
HIP 72564 |
16.27 |
| 2026-05-18 12:00 |
14:51:30.45 |
-44:03:43.0 |
HIP 72564 |
14.79 |
| 2026-05-19 00:00 |
14:51:20.16 |
-44:02:59.0 |
HIP 72564 |
13.44 |
| 2026-05-19 12:00 |
14:51:09.90 |
-44:02:14.5 |
HIP 72564 |
12.28 |
| 2026-05-20 00:00 |
14:50:59.66 |
-44:01:29.6 |
HIP 72564 |
11.35 |
| 2026-05-20 12:00 |
14:50:49.45 |
-44:00:44.3 |
HIP 72564 |
10.72 |
| 2026-05-21 00:00 |
14:50:39.27 |
-43:59:58.6 |
HIP 72564 |
10.45 |
| 2026-05-21 12:00 |
14:50:29.12 |
-43:59:12.5 |
HIP 72564 |
10.55 |
| 2026-05-22 00:00 |
14:50:19.00 |
-43:58:26.1 |
HIP 72564 |
11.02 |
| 2026-05-22 12:00 |
14:50:08.90 |
-43:57:39.2 |
HIP 72564 |
11.81 |
| 2026-05-23 00:00 |
14:49:58.84 |
-43:56:51.9 |
HIP 72564 |
12.87 |
| 2026-05-23 12:00 |
14:49:48.81 |
-43:56:04.2 |
HIP 72514 |
12.97 |
| 2026-05-24 00:00 |
14:49:38.82 |
-43:55:16.2 |
HIP 72514 |
11.95 |
| 2026-05-24 12:00 |
14:49:28.85 |
-43:54:27.8 |
HIP 72514 |
11.18 |
| 2026-05-25 00:00 |
14:49:18.93 |
-43:53:39.0 |
HIP 72514 |
10.72 |
| 2026-05-25 12:00 |
14:49:09.03 |
-43:52:49.9 |
HIP 72514 |
10.59 |
| 2026-05-26 00:00 |
14:48:59.18 |
-43:52:00.4 |
HIP 72514 |
10.82 |
| 2026-05-26 12:00 |
14:48:49.36 |
-43:51:10.5 |
HIP 72514 |
11.38 |
| 2026-05-27 00:00 |
14:48:39.57 |
-43:50:20.3 |
HIP 72514 |
12.23 |
| 2026-05-27 12:00 |
14:48:29.83 |
-43:49:29.8 |
HIP 72514 |
13.30 |
| 2026-05-28 00:00 |
14:48:20.12 |
-43:48:38.9 |
HIP 72514 |
14.54 |
| 2026-05-28 12:00 |
14:48:10.46 |
-43:47:47.7 |
HIP 72514 |
15.92 |
| 2026-05-29 00:00 |
14:48:00.83 |
-43:46:56.1 |
HIP 72338 |
14.49 |
| 2026-05-29 12:00 |
14:47:51.24 |
-43:46:04.2 |
HIP 72338 |
13.13 |
| 2026-05-30 00:00 |
14:47:41.70 |
-43:45:12.0 |
HIP 72338 |
11.92 |
| 2026-05-30 12:00 |
14:47:32.20 |
-43:44:19.5 |
HIP 72338 |
10.92 |
| 2026-05-31 00:00 |
14:47:22.74 |
-43:43:26.6 |
HIP 72338 |
10.18 |
| 2026-05-31 12:00 |
14:47:13.33 |
-43:42:33.5 |
HIP 72338 |
9.76 |
| 2026-06-01 00:00 |
14:47:03.95 |
-43:41:40.0 |
HIP 72338 |
9.70 |
| 2026-06-01 12:00 |
14:46:54.63 |
-43:40:46.2 |
HIP 72338 |
10.01 |
| 2026-06-02 00:00 |
14:46:45.35 |
-43:39:52.2 |
HIP 72338 |
10.65 |