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) |
2026-03-11T21:13:02Z |
| 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
$$
M_a = (12.357 + 4.798\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.357 |
| n |
4.798 |
| gf |
0.989 |
| gb |
-0.712 |
| 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 |
+3.8463 |
-1.845 |
| 2024-11-30 |
2025-02-05 |
-14.5398 |
+4.355 |
| 2025-06-26 |
2025-11-28 |
-5.8285 |
+2.402 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
03:50:51.67 |
-38:57:40.2 |
HIP 17993 |
1.90 |
| 2026-05-12 12:00 |
03:51:27.86 |
-38:57:56.7 |
HIP 17993 |
8.52 |
| 2026-05-13 00:00 |
03:52:04.05 |
-38:58:14.7 |
HIP 17993 |
15.51 |
| 2026-05-13 12:00 |
03:52:40.24 |
-38:58:34.4 |
HIP 18101 |
18.24 |
| 2026-05-14 00:00 |
03:53:16.42 |
-38:58:55.6 |
HIP 18101 |
21.41 |
| 2026-05-14 12:00 |
03:53:52.61 |
-38:59:18.3 |
HIP 18337 |
21.21 |
| 2026-05-15 00:00 |
03:54:28.79 |
-38:59:42.7 |
HIP 18337 |
16.83 |
| 2026-05-15 12:00 |
03:55:04.97 |
-39:00:08.6 |
HIP 18337 |
14.73 |
| 2026-05-16 00:00 |
03:55:41.14 |
-39:00:36.2 |
HIP 18437 |
9.80 |
| 2026-05-16 12:00 |
03:56:17.31 |
-39:01:05.3 |
HIP 18437 |
4.09 |
| 2026-05-17 00:00 |
03:56:53.47 |
-39:01:36.0 |
HIP 18437 |
6.08 |
| 2026-05-17 12:00 |
03:57:29.63 |
-39:02:08.3 |
HIP 18503 |
3.93 |
| 2026-05-18 00:00 |
03:58:05.78 |
-39:02:42.2 |
HIP 18503 |
8.71 |
| 2026-05-18 12:00 |
03:58:41.92 |
-39:03:17.7 |
HIP 18503 |
15.33 |
| 2026-05-19 00:00 |
03:59:18.05 |
-39:03:54.7 |
HIP 18702 |
14.67 |
| 2026-05-19 12:00 |
03:59:54.17 |
-39:04:33.4 |
HIP 18702 |
9.75 |
| 2026-05-20 00:00 |
04:00:30.28 |
-39:05:13.7 |
HIP 18702 |
8.63 |
| 2026-05-20 12:00 |
04:01:06.38 |
-39:05:55.6 |
HIP 18702 |
12.40 |
| 2026-05-21 00:00 |
04:01:42.46 |
-39:06:39.0 |
HIP 18702 |
18.24 |
| 2026-05-21 12:00 |
04:02:18.54 |
-39:07:24.1 |
HIP 18906 |
17.46 |
| 2026-05-22 00:00 |
04:02:54.59 |
-39:08:10.8 |
HIP 18906 |
13.97 |
| 2026-05-22 12:00 |
04:03:30.64 |
-39:08:59.0 |
HIP 18906 |
13.55 |
| 2026-05-23 00:00 |
04:04:06.67 |
-39:09:48.8 |
HIP 18928 |
15.06 |
| 2026-05-23 12:00 |
04:04:42.68 |
-39:10:40.3 |
HIP 19126 |
18.73 |
| 2026-05-24 00:00 |
04:05:18.68 |
-39:11:33.3 |
HIP 19126 |
14.37 |
| 2026-05-24 12:00 |
04:05:54.66 |
-39:12:27.9 |
HIP 19126 |
12.73 |
| 2026-05-25 00:00 |
04:06:30.62 |
-39:13:24.1 |
HIP 19126 |
14.75 |
| 2026-05-25 12:00 |
04:07:06.57 |
-39:14:21.9 |
HIP 19238 |
15.90 |
| 2026-05-26 00:00 |
04:07:42.49 |
-39:15:21.3 |
HIP 19238 |
15.00 |
| 2026-05-26 12:00 |
04:08:18.40 |
-39:16:22.2 |
HIP 19238 |
17.17 |
| 2026-05-27 00:00 |
04:08:54.29 |
-39:17:24.8 |
HIP 19238 |
21.49 |
| 2026-05-27 12:00 |
04:09:30.15 |
-39:18:28.9 |
HIP 19238 |
26.95 |
| 2026-05-28 00:00 |
04:10:06.00 |
-39:19:34.6 |
HIP 19238 |
32.99 |
| 2026-05-28 12:00 |
04:10:41.82 |
-39:20:41.9 |
HIP 19238 |
39.34 |
| 2026-05-29 00:00 |
04:11:17.62 |
-39:21:50.8 |
HIP 19794 |
44.54 |
| 2026-05-29 12:00 |
04:11:53.40 |
-39:23:01.3 |
HIP 19768 |
38.71 |
| 2026-05-30 00:00 |
04:12:29.15 |
-39:24:13.3 |
HIP 19768 |
33.09 |
| 2026-05-30 12:00 |
04:13:04.88 |
-39:25:27.0 |
HIP 19768 |
28.08 |
| 2026-05-31 00:00 |
04:13:40.59 |
-39:26:42.2 |
HIP 19768 |
24.06 |
| 2026-05-31 12:00 |
04:14:16.27 |
-39:27:59.0 |
HIP 19768 |
21.58 |
| 2026-06-01 00:00 |
04:14:51.93 |
-39:29:17.3 |
HIP 19898 |
16.31 |
| 2026-06-01 12:00 |
04:15:27.56 |
-39:30:37.3 |
HIP 19898 |
9.90 |
| 2026-06-02 00:00 |
04:16:03.16 |
-39:31:58.8 |
HIP 19898 |
5.24 |