| Parameter |
Value |
| Designation |
C/1970 K1 (White-Ortiz-Bolelli) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1970-05-14T11:32:18.864960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
9 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1970-05-29.0000000 |
| e |
0.99994911 |
| q (au) |
0.008844 |
| a (au) |
173.786769 |
| i (deg) |
138.952249 |
| Ω (om, deg) |
336.819676 |
| ω (w, deg) |
61.102946 |
| M (ma, deg) |
0.006246 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.051 + 4.003\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.051 |
| n |
4.003 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
06:46:12.90 |
-11:23:59.2 |
HIP 32344 |
16.34 |
| 2026-06-01 12:00 |
06:46:14.19 |
-11:23:54.1 |
HIP 32344 |
16.66 |
| 2026-06-02 00:00 |
06:46:15.49 |
-11:23:49.0 |
HIP 32344 |
16.98 |
| 2026-06-02 12:00 |
06:46:16.79 |
-11:23:44.1 |
HIP 32344 |
17.30 |
| 2026-06-03 00:00 |
06:46:18.10 |
-11:23:39.3 |
HIP 32344 |
17.63 |
| 2026-06-03 12:00 |
06:46:19.41 |
-11:23:34.6 |
HIP 32344 |
17.95 |
| 2026-06-04 00:00 |
06:46:20.73 |
-11:23:30.0 |
HIP 32344 |
18.28 |
| 2026-06-04 12:00 |
06:46:22.06 |
-11:23:25.5 |
HIP 32344 |
18.61 |
| 2026-06-05 00:00 |
06:46:23.39 |
-11:23:21.0 |
HIP 32344 |
18.94 |
| 2026-06-05 12:00 |
06:46:24.73 |
-11:23:16.7 |
HIP 32344 |
19.28 |
| 2026-06-06 00:00 |
06:46:26.07 |
-11:23:12.5 |
HIP 32344 |
19.61 |
| 2026-06-06 12:00 |
06:46:27.41 |
-11:23:08.4 |
HIP 32344 |
19.94 |
| 2026-06-07 00:00 |
06:46:28.77 |
-11:23:04.4 |
HIP 32344 |
20.28 |
| 2026-06-07 12:00 |
06:46:30.12 |
-11:23:00.4 |
HIP 32344 |
20.62 |
| 2026-06-08 00:00 |
06:46:31.49 |
-11:22:56.6 |
HIP 32344 |
20.95 |
| 2026-06-08 12:00 |
06:46:32.86 |
-11:22:52.9 |
HIP 32344 |
21.29 |
| 2026-06-09 00:00 |
06:46:34.23 |
-11:22:49.3 |
HIP 32344 |
21.63 |
| 2026-06-09 12:00 |
06:46:35.61 |
-11:22:45.8 |
HIP 32344 |
21.98 |
| 2026-06-10 00:00 |
06:46:36.99 |
-11:22:42.4 |
HIP 32344 |
22.32 |
| 2026-06-10 12:00 |
06:46:38.38 |
-11:22:39.1 |
HIP 32344 |
22.66 |
| 2026-06-11 00:00 |
06:46:39.77 |
-11:22:35.9 |
HIP 32344 |
23.01 |
| 2026-06-11 12:00 |
06:46:41.16 |
-11:22:32.8 |
HIP 32344 |
23.35 |
| 2026-06-12 00:00 |
06:46:42.56 |
-11:22:29.8 |
HIP 32344 |
23.70 |
| 2026-06-12 12:00 |
06:46:43.97 |
-11:22:26.9 |
HIP 32585 |
24.04 |
| 2026-06-13 00:00 |
06:46:45.38 |
-11:22:24.1 |
HIP 32585 |
23.75 |
| 2026-06-13 12:00 |
06:46:46.79 |
-11:22:21.4 |
HIP 32585 |
23.47 |
| 2026-06-14 00:00 |
06:46:48.21 |
-11:22:18.9 |
HIP 32585 |
23.18 |
| 2026-06-14 12:00 |
06:46:49.63 |
-11:22:16.4 |
HIP 32585 |
22.90 |
| 2026-06-15 00:00 |
06:46:51.05 |
-11:22:14.0 |
HIP 32585 |
22.62 |
| 2026-06-15 12:00 |
06:46:52.48 |
-11:22:11.8 |
HIP 32585 |
22.35 |
| 2026-06-16 00:00 |
06:46:53.91 |
-11:22:09.6 |
HIP 32585 |
22.07 |
| 2026-06-16 12:00 |
06:46:55.35 |
-11:22:07.5 |
HIP 32585 |
21.80 |
| 2026-06-17 00:00 |
06:46:56.79 |
-11:22:05.6 |
HIP 32585 |
21.53 |
| 2026-06-17 12:00 |
06:46:58.23 |
-11:22:03.8 |
HIP 32585 |
21.27 |
| 2026-06-18 00:00 |
06:46:59.67 |
-11:22:02.0 |
HIP 32585 |
21.01 |
| 2026-06-18 12:00 |
06:47:01.12 |
-11:22:00.4 |
HIP 32585 |
20.75 |
| 2026-06-19 00:00 |
06:47:02.57 |
-11:21:58.9 |
HIP 32585 |
20.49 |
| 2026-06-19 12:00 |
06:47:04.03 |
-11:21:57.4 |
HIP 32585 |
20.25 |
| 2026-06-20 00:00 |
06:47:05.48 |
-11:21:56.1 |
HIP 32585 |
20.00 |
| 2026-06-20 12:00 |
06:47:06.94 |
-11:21:54.9 |
HIP 32585 |
19.76 |
| 2026-06-21 00:00 |
06:47:08.40 |
-11:21:53.8 |
HIP 32585 |
19.52 |
| 2026-06-21 12:00 |
06:47:09.86 |
-11:21:52.8 |
HIP 32585 |
19.29 |
| 2026-06-22 00:00 |
06:47:11.33 |
-11:21:51.9 |
HIP 32585 |
19.06 |