메타데이터
| 항목 |
값 |
| Designation |
C/2022 P1 (NEOWISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-11-28T11:23:56.353920Z |
| Orbit solution date (soln_date, UTC) |
2023-06-30T22:17:01Z |
| Obs used |
696 |
| NEO |
- |
| M1 |
11.500 |
| K1 |
13.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-08-08T08:24:35.424000Z |
| Discovery magnitude (MPC) |
18.00 R |
| Discovery observatory (MPC) |
C51 · WISE |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-10-18.0000000 |
| e |
0.91345543 |
| q (au) |
1.595184 |
| a (au) |
18.431934 |
| i (deg) |
154.606664 |
| Ω (om, deg) |
205.081648 |
| ω (w, deg) |
249.934454 |
| M (ma, deg) |
359.483425 |
밝기
산란 + 전체 선형
$$
M_a = (10.149 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.149 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-1.000 |
| k |
0.999 |
| 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 |
| 2022-08-08 |
2022-11-26 |
+30.4030 |
-9.310 |
| 2022-12-07 |
2023-06-16 |
+15.1448 |
-6.764 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
11:47:58.24 |
+15:36:24.9 |
HIP 57635 |
27.71 |
| 2026-06-01 12:00 |
11:47:54.10 |
+15:36:21.3 |
HIP 57635 |
28.25 |
| 2026-06-02 00:00 |
11:47:50.05 |
+15:36:17.1 |
HIP 57635 |
28.80 |
| 2026-06-02 12:00 |
11:47:46.10 |
+15:36:12.3 |
HIP 57635 |
29.34 |
| 2026-06-03 00:00 |
11:47:42.24 |
+15:36:06.8 |
HIP 57635 |
29.89 |
| 2026-06-03 12:00 |
11:47:38.48 |
+15:36:00.8 |
HIP 57635 |
30.43 |
| 2026-06-04 00:00 |
11:47:34.82 |
+15:35:54.1 |
HIP 57635 |
30.96 |
| 2026-06-04 12:00 |
11:47:31.25 |
+15:35:46.9 |
HIP 57635 |
31.49 |
| 2026-06-05 00:00 |
11:47:27.77 |
+15:35:39.0 |
HIP 57336 |
31.33 |
| 2026-06-05 12:00 |
11:47:24.39 |
+15:35:30.6 |
HIP 57336 |
30.58 |
| 2026-06-06 00:00 |
11:47:21.10 |
+15:35:21.6 |
HIP 57336 |
29.86 |
| 2026-06-06 12:00 |
11:47:17.91 |
+15:35:12.0 |
HIP 57336 |
29.17 |
| 2026-06-07 00:00 |
11:47:14.82 |
+15:35:01.8 |
HIP 57336 |
28.51 |
| 2026-06-07 12:00 |
11:47:11.81 |
+15:34:51.0 |
HIP 57336 |
27.88 |
| 2026-06-08 00:00 |
11:47:08.91 |
+15:34:39.6 |
HIP 57336 |
27.28 |
| 2026-06-08 12:00 |
11:47:06.09 |
+15:34:27.7 |
HIP 57336 |
26.71 |
| 2026-06-09 00:00 |
11:47:03.37 |
+15:34:15.3 |
HIP 57336 |
26.17 |
| 2026-06-09 12:00 |
11:47:00.74 |
+15:34:02.2 |
HIP 57336 |
25.67 |
| 2026-06-10 00:00 |
11:46:58.21 |
+15:33:48.6 |
HIP 57336 |
25.19 |
| 2026-06-10 12:00 |
11:46:55.77 |
+15:33:34.4 |
HIP 57336 |
24.75 |
| 2026-06-11 00:00 |
11:46:53.43 |
+15:33:19.7 |
HIP 57336 |
24.34 |
| 2026-06-11 12:00 |
11:46:51.17 |
+15:33:04.5 |
HIP 57336 |
23.96 |
| 2026-06-12 00:00 |
11:46:49.01 |
+15:32:48.7 |
HIP 57336 |
23.62 |
| 2026-06-12 12:00 |
11:46:46.95 |
+15:32:32.3 |
HIP 57336 |
23.31 |
| 2026-06-13 00:00 |
11:46:44.97 |
+15:32:15.5 |
HIP 57336 |
23.03 |
| 2026-06-13 12:00 |
11:46:43.09 |
+15:31:58.1 |
HIP 57336 |
22.79 |
| 2026-06-14 00:00 |
11:46:41.30 |
+15:31:40.1 |
HIP 57336 |
22.58 |
| 2026-06-14 12:00 |
11:46:39.61 |
+15:31:21.7 |
HIP 57336 |
22.41 |
| 2026-06-15 00:00 |
11:46:38.00 |
+15:31:02.7 |
HIP 57336 |
22.26 |
| 2026-06-15 12:00 |
11:46:36.49 |
+15:30:43.2 |
HIP 57336 |
22.15 |
| 2026-06-16 00:00 |
11:46:35.07 |
+15:30:23.2 |
HIP 57336 |
22.08 |
| 2026-06-16 12:00 |
11:46:33.74 |
+15:30:02.7 |
HIP 57336 |
22.03 |
| 2026-06-17 00:00 |
11:46:32.50 |
+15:29:41.7 |
HIP 57336 |
22.02 |
| 2026-06-17 12:00 |
11:46:31.35 |
+15:29:20.2 |
HIP 57336 |
22.04 |
| 2026-06-18 00:00 |
11:46:30.29 |
+15:28:58.2 |
HIP 57336 |
22.09 |
| 2026-06-18 12:00 |
11:46:29.32 |
+15:28:35.8 |
HIP 57313 |
22.17 |
| 2026-06-19 00:00 |
11:46:28.44 |
+15:28:12.8 |
HIP 57313 |
21.83 |
| 2026-06-19 12:00 |
11:46:27.65 |
+15:27:49.4 |
HIP 57313 |
21.52 |
| 2026-06-20 00:00 |
11:46:26.94 |
+15:27:25.5 |
HIP 57313 |
21.22 |
| 2026-06-20 12:00 |
11:46:26.33 |
+15:27:01.2 |
HIP 57313 |
20.94 |
| 2026-06-21 00:00 |
11:46:25.80 |
+15:26:36.3 |
HIP 57313 |
20.69 |
| 2026-06-21 12:00 |
11:46:25.37 |
+15:26:11.1 |
HIP 57313 |
20.46 |
| 2026-06-22 00:00 |
11:46:25.02 |
+15:25:45.4 |
HIP 57313 |
20.26 |