메타데이터
| 항목 |
값 |
| Designation |
C/2023 H1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-11-28T15:51:32.506560Z |
| Orbit solution date (soln_date, UTC) |
2025-12-18T15:12:22Z |
| Obs used |
733 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
12.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-04-17T08:21:30.268800Z |
| Discovery magnitude (MPC) |
20.80 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-04-15.0000000 |
| e |
0.99412834 |
| q (au) |
4.447633 |
| a (au) |
757.474344 |
| i (deg) |
21.782467 |
| Ω (om, deg) |
292.646754 |
| ω (w, deg) |
333.755152 |
| M (ma, deg) |
0.006493 |
밝기
산란 + 전체 선형
$$
M_a = (4.558 + 5.313\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.558 |
| n |
5.313 |
| gf |
1.000 |
| gb |
-0.963 |
| k |
1.000 |
| 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 |
| 2023-04-17 |
2024-09-05 |
-3.7302 |
+3.621 |
| 2025-03-10 |
2025-11-15 |
-7.2442 |
+4.804 |
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 |
22:19:56.16 |
+04:05:23.4 |
HIP 110163 |
16.50 |
| 2026-06-01 12:00 |
22:20:00.50 |
+04:07:41.0 |
HIP 110163 |
17.29 |
| 2026-06-02 00:00 |
22:20:04.70 |
+04:09:57.9 |
HIP 110163 |
18.36 |
| 2026-06-02 12:00 |
22:20:08.76 |
+04:12:14.1 |
HIP 110163 |
19.67 |
| 2026-06-03 00:00 |
22:20:12.68 |
+04:14:29.7 |
HIP 110163 |
21.14 |
| 2026-06-03 12:00 |
22:20:16.46 |
+04:16:44.5 |
HIP 110163 |
22.75 |
| 2026-06-04 00:00 |
22:20:20.09 |
+04:18:58.6 |
HIP 110163 |
24.46 |
| 2026-06-04 12:00 |
22:20:23.58 |
+04:21:12.0 |
HIP 110163 |
26.24 |
| 2026-06-05 00:00 |
22:20:26.92 |
+04:23:24.7 |
HIP 110163 |
28.08 |
| 2026-06-05 12:00 |
22:20:30.12 |
+04:25:36.6 |
HIP 110163 |
29.95 |
| 2026-06-06 00:00 |
22:20:33.18 |
+04:27:47.8 |
HIP 110163 |
31.85 |
| 2026-06-06 12:00 |
22:20:36.10 |
+04:29:58.3 |
HIP 110163 |
33.77 |
| 2026-06-07 00:00 |
22:20:38.87 |
+04:32:08.0 |
HIP 110163 |
35.69 |
| 2026-06-07 12:00 |
22:20:41.49 |
+04:34:16.9 |
HIP 110163 |
37.62 |
| 2026-06-08 00:00 |
22:20:43.98 |
+04:36:25.1 |
HIP 110163 |
39.55 |
| 2026-06-08 12:00 |
22:20:46.31 |
+04:38:32.6 |
HIP 110168 |
41.19 |
| 2026-06-09 00:00 |
22:20:48.51 |
+04:40:39.2 |
HIP 110168 |
40.07 |
| 2026-06-09 12:00 |
22:20:50.55 |
+04:42:45.1 |
HIP 110168 |
39.02 |
| 2026-06-10 00:00 |
22:20:52.46 |
+04:44:50.2 |
HIP 110168 |
38.04 |
| 2026-06-10 12:00 |
22:20:54.21 |
+04:46:54.4 |
HIP 110168 |
37.14 |
| 2026-06-11 00:00 |
22:20:55.82 |
+04:48:57.9 |
HIP 110168 |
36.31 |
| 2026-06-11 12:00 |
22:20:57.29 |
+04:51:00.6 |
HIP 110168 |
35.57 |
| 2026-06-12 00:00 |
22:20:58.61 |
+04:53:02.5 |
HIP 110168 |
34.90 |
| 2026-06-12 12:00 |
22:20:59.79 |
+04:55:03.5 |
HIP 110168 |
34.32 |
| 2026-06-13 00:00 |
22:21:00.82 |
+04:57:03.7 |
HIP 110168 |
33.82 |
| 2026-06-13 12:00 |
22:21:01.70 |
+04:59:03.1 |
HIP 110168 |
33.41 |
| 2026-06-14 00:00 |
22:21:02.44 |
+05:01:01.7 |
HIP 110168 |
33.08 |
| 2026-06-14 12:00 |
22:21:03.04 |
+05:02:59.4 |
HIP 110168 |
32.83 |
| 2026-06-15 00:00 |
22:21:03.48 |
+05:04:56.2 |
HIP 110168 |
32.67 |
| 2026-06-15 12:00 |
22:21:03.79 |
+05:06:52.2 |
HIP 110168 |
32.59 |
| 2026-06-16 00:00 |
22:21:03.95 |
+05:08:47.3 |
HIP 110168 |
32.58 |
| 2026-06-16 12:00 |
22:21:03.96 |
+05:10:41.6 |
HIP 110168 |
32.65 |
| 2026-06-17 00:00 |
22:21:03.83 |
+05:12:35.0 |
HIP 110370 |
31.34 |
| 2026-06-17 12:00 |
22:21:03.55 |
+05:14:27.5 |
HIP 110370 |
29.49 |
| 2026-06-18 00:00 |
22:21:03.13 |
+05:16:19.1 |
HIP 110370 |
27.66 |
| 2026-06-18 12:00 |
22:21:02.56 |
+05:18:09.8 |
HIP 110370 |
25.85 |
| 2026-06-19 00:00 |
22:21:01.85 |
+05:19:59.6 |
HIP 110370 |
24.07 |
| 2026-06-19 12:00 |
22:21:01.00 |
+05:21:48.6 |
HIP 110370 |
22.33 |
| 2026-06-20 00:00 |
22:21:00.01 |
+05:23:36.6 |
HIP 110370 |
20.62 |
| 2026-06-20 12:00 |
22:20:58.87 |
+05:25:23.7 |
HIP 110370 |
18.95 |
| 2026-06-21 00:00 |
22:20:57.59 |
+05:27:09.9 |
HIP 110370 |
17.34 |
| 2026-06-21 12:00 |
22:20:56.16 |
+05:28:55.2 |
HIP 110370 |
15.79 |
| 2026-06-22 00:00 |
22:20:54.60 |
+05:30:39.5 |
HIP 110370 |
14.33 |