메타데이터
| 항목 |
값 |
| Designation |
C/2025 W1 (Sankovich) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-02-17T17:39:07.554240Z |
| Orbit solution date (soln_date, UTC) |
2025-12-18T15:12:26Z |
| Obs used |
80 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-11-20T03:53:37.536000Z |
| Discovery magnitude (MPC) |
19.80 R |
| Discovery observatory (MPC) |
X19 · Santel Observatory, El Leoncito |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-11-26.0000000 |
| e |
0.99973624 |
| q (au) |
4.170169 |
| a (au) |
15810.455383 |
| i (deg) |
79.800605 |
| Ω (om, deg) |
95.890663 |
| ω (w, deg) |
250.634842 |
| M (ma, deg) |
0.000139 |
밝기
산란 + 전체 선형
$$
M_a = (9.395 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.395 |
| n |
6.000 |
| gf |
0.915 |
| gb |
-0.828 |
| k |
0.806 |
| δ90 |
4.574 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
05:20:05.62 |
-19:17:46.4 |
HIP 24932 |
8.68 |
| 2026-05-12 12:00 |
05:20:26.22 |
-19:13:41.9 |
HIP 24932 |
10.58 |
| 2026-05-13 00:00 |
05:20:46.84 |
-19:09:39.1 |
HIP 24932 |
15.11 |
| 2026-05-13 12:00 |
05:21:07.49 |
-19:05:38.0 |
HIP 25057 |
18.95 |
| 2026-05-14 00:00 |
05:21:28.17 |
-19:01:38.5 |
HIP 25057 |
12.94 |
| 2026-05-14 12:00 |
05:21:48.87 |
-18:57:40.6 |
HIP 25057 |
7.47 |
| 2026-05-15 00:00 |
05:22:09.60 |
-18:53:44.5 |
HIP 25057 |
4.87 |
| 2026-05-15 12:00 |
05:22:30.36 |
-18:49:49.9 |
HIP 25057 |
8.42 |
| 2026-05-16 00:00 |
05:22:51.14 |
-18:45:57.0 |
HIP 25057 |
14.03 |
| 2026-05-16 12:00 |
05:23:11.94 |
-18:42:05.8 |
HIP 25057 |
20.03 |
| 2026-05-17 00:00 |
05:23:32.77 |
-18:38:16.2 |
HIP 25333 |
22.71 |
| 2026-05-17 12:00 |
05:23:53.61 |
-18:34:28.3 |
HIP 25333 |
19.32 |
| 2026-05-18 00:00 |
05:24:14.48 |
-18:30:42.0 |
HIP 25333 |
17.54 |
| 2026-05-18 12:00 |
05:24:35.37 |
-18:26:57.3 |
HIP 25333 |
17.84 |
| 2026-05-19 00:00 |
05:24:56.27 |
-18:23:14.3 |
HIP 25333 |
20.12 |
| 2026-05-19 12:00 |
05:25:17.19 |
-18:19:32.9 |
HIP 25333 |
23.80 |
| 2026-05-20 00:00 |
05:25:38.13 |
-18:15:53.2 |
HIP 25333 |
28.35 |
| 2026-05-20 12:00 |
05:25:59.09 |
-18:12:15.1 |
HIP 25573 |
30.46 |
| 2026-05-21 00:00 |
05:26:20.06 |
-18:08:38.6 |
HIP 25573 |
24.49 |
| 2026-05-21 12:00 |
05:26:41.04 |
-18:05:03.7 |
HIP 25573 |
18.66 |
| 2026-05-22 00:00 |
05:27:02.04 |
-18:01:30.5 |
HIP 25573 |
13.10 |
| 2026-05-22 12:00 |
05:27:23.05 |
-17:57:58.9 |
HIP 25573 |
8.35 |
| 2026-05-23 00:00 |
05:27:44.07 |
-17:54:28.9 |
HIP 25573 |
6.51 |
| 2026-05-23 12:00 |
05:28:05.11 |
-17:51:00.5 |
HIP 25573 |
9.44 |
| 2026-05-24 00:00 |
05:28:26.15 |
-17:47:33.6 |
HIP 25573 |
14.46 |
| 2026-05-24 12:00 |
05:28:47.20 |
-17:44:08.4 |
HIP 25670 |
18.62 |
| 2026-05-25 00:00 |
05:29:08.26 |
-17:40:44.8 |
HIP 25670 |
15.16 |
| 2026-05-25 12:00 |
05:29:29.33 |
-17:37:22.8 |
HIP 25670 |
13.68 |
| 2026-05-26 00:00 |
05:29:50.40 |
-17:34:02.4 |
HIP 25670 |
14.76 |
| 2026-05-26 12:00 |
05:30:11.48 |
-17:30:43.5 |
HIP 25670 |
17.95 |
| 2026-05-27 00:00 |
05:30:32.57 |
-17:27:26.3 |
HIP 25688 |
21.70 |
| 2026-05-27 12:00 |
05:30:53.66 |
-17:24:10.6 |
HIP 25688 |
25.61 |
| 2026-05-28 00:00 |
05:31:14.76 |
-17:20:56.5 |
HIP 26004 |
25.90 |
| 2026-05-28 12:00 |
05:31:35.85 |
-17:17:43.9 |
HIP 26004 |
20.41 |
| 2026-05-29 00:00 |
05:31:56.96 |
-17:14:32.9 |
HIP 26004 |
15.28 |
| 2026-05-29 12:00 |
05:32:18.06 |
-17:11:23.5 |
HIP 26004 |
11.01 |
| 2026-05-30 00:00 |
05:32:39.16 |
-17:08:15.6 |
HIP 26004 |
8.89 |
| 2026-05-30 12:00 |
05:33:00.27 |
-17:05:09.3 |
HIP 26004 |
10.33 |
| 2026-05-31 00:00 |
05:33:21.37 |
-17:02:04.5 |
HIP 26004 |
14.28 |
| 2026-05-31 12:00 |
05:33:42.48 |
-16:59:01.3 |
HIP 26004 |
19.23 |
| 2026-06-01 00:00 |
05:34:03.58 |
-16:55:59.6 |
HIP 26004 |
24.59 |
| 2026-06-01 12:00 |
05:34:24.68 |
-16:52:59.5 |
HIP 26303 |
24.03 |
| 2026-06-02 00:00 |
05:34:45.78 |
-16:50:00.9 |
HIP 26303 |
19.04 |