C/2024 J2 (Wierzchos)
메타데이터
| 항목 |
값 |
| Designation |
C/2024 J2 (Wierzchos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-03-19T18:36:17.582400Z |
| Orbit solution date (soln_date, UTC) |
2025-11-21T13:42:49Z |
| Obs used |
451 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2024-05-11T06:26:33.302400Z |
| Discovery magnitude (MPC) |
21.29 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-02-11.0000000 |
| e |
0.98760800 |
| q (au) |
1.810945 |
| a (au) |
146.138176 |
| i (deg) |
79.296967 |
| Ω (om, deg) |
189.059198 |
| ω (w, deg) |
143.153599 |
| M (ma, deg) |
359.979483 |
밝기
산란 + 전체 선형
$$
M_a = (12.367 + 4.870\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.367 |
| n |
4.870 |
| gf |
1.000 |
| gb |
-0.729 |
| k |
0.800 |
| δ90 |
10.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2024-03-12 |
2024-11-30 |
+3.8853 |
-1.850 |
| 2024-11-30 |
2025-02-05 |
-14.6583 |
+4.402 |
| 2025-06-26 |
2025-11-28 |
-6.8041 |
+2.738 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
02:07:40.07 |
-45:13:17.5 |
HIP 10067 |
24.81 |
| 2026-02-03 12:00 |
02:08:01.15 |
-45:09:48.0 |
HIP 10067 |
24.42 |
| 2026-02-04 00:00 |
02:08:22.42 |
-45:06:19.0 |
HIP 10067 |
25.05 |
| 2026-02-04 12:00 |
02:08:43.89 |
-45:02:50.4 |
HIP 10067 |
26.65 |
| 2026-02-05 00:00 |
02:09:05.53 |
-44:59:22.2 |
HIP 10067 |
29.06 |
| 2026-02-05 12:00 |
02:09:27.37 |
-44:55:54.5 |
HIP 9993 |
27.61 |
| 2026-02-06 00:00 |
02:09:49.39 |
-44:52:27.3 |
HIP 9993 |
25.90 |
| 2026-02-06 12:00 |
02:10:11.58 |
-44:49:00.5 |
HIP 9993 |
25.20 |
| 2026-02-07 00:00 |
02:10:33.96 |
-44:45:34.2 |
HIP 9993 |
25.62 |
| 2026-02-07 12:00 |
02:10:56.52 |
-44:42:08.4 |
HIP 10304 |
23.48 |
| 2026-02-08 00:00 |
02:11:19.26 |
-44:38:43.1 |
HIP 10304 |
18.24 |
| 2026-02-08 12:00 |
02:11:42.17 |
-44:35:18.3 |
HIP 10304 |
13.01 |
| 2026-02-09 00:00 |
02:12:05.25 |
-44:31:54.1 |
HIP 10304 |
7.88 |
| 2026-02-09 12:00 |
02:12:28.51 |
-44:28:30.4 |
HIP 10304 |
3.42 |
| 2026-02-10 00:00 |
02:12:51.94 |
-44:25:07.2 |
HIP 10304 |
4.31 |
| 2026-02-10 12:00 |
02:13:15.54 |
-44:21:44.6 |
HIP 10283 |
9.01 |
| 2026-02-11 00:00 |
02:13:39.30 |
-44:18:22.6 |
HIP 10283 |
13.77 |
| 2026-02-11 12:00 |
02:14:03.23 |
-44:15:01.2 |
HIP 10283 |
18.92 |
| 2026-02-12 00:00 |
02:14:27.33 |
-44:11:40.3 |
HIP 10447 |
22.10 |
| 2026-02-12 12:00 |
02:14:51.59 |
-44:08:20.1 |
HIP 10447 |
25.45 |
| 2026-02-13 00:00 |
02:15:16.01 |
-44:05:00.5 |
HIP 10520 |
24.71 |
| 2026-02-13 12:00 |
02:15:40.60 |
-44:01:41.6 |
HIP 10520 |
21.24 |
| 2026-02-14 00:00 |
02:16:05.34 |
-43:58:23.2 |
HIP 10520 |
18.81 |
| 2026-02-14 12:00 |
02:16:30.24 |
-43:55:05.6 |
HIP 10520 |
17.86 |
| 2026-02-15 00:00 |
02:16:55.29 |
-43:51:48.6 |
HIP 10744 |
15.05 |
| 2026-02-15 12:00 |
02:17:20.50 |
-43:48:32.3 |
HIP 10744 |
12.61 |
| 2026-02-16 00:00 |
02:17:45.86 |
-43:45:16.6 |
HIP 10744 |
12.38 |
| 2026-02-16 12:00 |
02:18:11.38 |
-43:42:01.7 |
HIP 10744 |
14.50 |
| 2026-02-17 00:00 |
02:18:37.04 |
-43:38:47.5 |
HIP 10744 |
18.18 |
| 2026-02-17 12:00 |
02:19:02.85 |
-43:35:34.0 |
HIP 10744 |
22.68 |
| 2026-02-18 00:00 |
02:19:28.81 |
-43:32:21.3 |
HIP 10744 |
27.62 |
| 2026-02-18 12:00 |
02:19:54.92 |
-43:29:09.3 |
HIP 11040 |
25.75 |
| 2026-02-19 00:00 |
02:20:21.17 |
-43:25:58.0 |
HIP 11040 |
22.61 |
| 2026-02-19 12:00 |
02:20:47.56 |
-43:22:47.6 |
HIP 11043 |
18.74 |
| 2026-02-20 00:00 |
02:21:14.09 |
-43:19:37.9 |
HIP 11043 |
12.97 |
| 2026-02-20 12:00 |
02:21:40.76 |
-43:16:29.0 |
HIP 11043 |
7.20 |
| 2026-02-21 00:00 |
02:22:07.57 |
-43:13:20.9 |
HIP 11043 |
1.55 |
| 2026-02-21 12:00 |
02:22:34.52 |
-43:10:13.6 |
HIP 11043 |
4.52 |
| 2026-02-22 00:00 |
02:23:01.60 |
-43:07:07.2 |
HIP 11043 |
10.32 |
| 2026-02-22 12:00 |
02:23:28.81 |
-43:04:01.5 |
HIP 11034 |
15.98 |
| 2026-02-23 00:00 |
02:23:56.16 |
-43:00:56.8 |
HIP 11034 |
20.17 |
| 2026-02-23 12:00 |
02:24:23.63 |
-42:57:52.8 |
HIP 11034 |
25.08 |
| 2026-02-24 00:00 |
02:24:51.24 |
-42:54:49.8 |
HIP 11034 |
30.37 |