메타데이터
| 항목 |
값 |
| Designation |
C/2022 S5 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-11-27T11:05:05.619840Z |
| Orbit solution date (soln_date, UTC) |
2023-04-21T18:43:35Z |
| Obs used |
100 |
| NEO |
- |
| M1 |
12.600 |
| K1 |
17.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-09-24T12:06:49.190400Z |
| Discovery magnitude (MPC) |
19.57 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-10-08.0000000 |
| e |
0.89345955 |
| q (au) |
2.178764 |
| a (au) |
20.450111 |
| i (deg) |
136.530929 |
| Ω (om, deg) |
214.856203 |
| ω (w, deg) |
232.775257 |
| M (ma, deg) |
359.462196 |
밝기
산란 + 전체 선형
$$
M_a = (12.631 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.631 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
13:39:05.40 |
-05:58:17.9 |
HIP 66587 |
15.97 |
| 2026-07-29 12:00 |
13:39:06.47 |
-05:58:13.0 |
HIP 66587 |
16.08 |
| 2026-07-30 00:00 |
13:39:07.62 |
-05:58:08.5 |
HIP 66587 |
16.19 |
| 2026-07-30 12:00 |
13:39:08.85 |
-05:58:04.5 |
HIP 66587 |
16.31 |
| 2026-07-31 00:00 |
13:39:10.17 |
-05:58:01.0 |
HIP 66587 |
16.42 |
| 2026-07-31 12:00 |
13:39:11.56 |
-05:57:57.9 |
HIP 66587 |
16.53 |
| 2026-08-01 00:00 |
13:39:13.04 |
-05:57:55.4 |
HIP 66587 |
16.65 |
| 2026-08-01 12:00 |
13:39:14.59 |
-05:57:53.3 |
HIP 66587 |
16.77 |
| 2026-08-02 00:00 |
13:39:16.23 |
-05:57:51.6 |
HIP 66587 |
16.90 |
| 2026-08-02 12:00 |
13:39:17.95 |
-05:57:50.4 |
HIP 66587 |
17.03 |
| 2026-08-03 00:00 |
13:39:19.74 |
-05:57:49.7 |
HIP 66587 |
17.17 |
| 2026-08-03 12:00 |
13:39:21.62 |
-05:57:49.4 |
HIP 66587 |
17.33 |
| 2026-08-04 00:00 |
13:39:23.57 |
-05:57:49.5 |
HIP 66587 |
17.49 |
| 2026-08-04 12:00 |
13:39:25.60 |
-05:57:50.2 |
HIP 66587 |
17.67 |
| 2026-08-05 00:00 |
13:39:27.71 |
-05:57:51.2 |
HIP 66587 |
17.86 |
| 2026-08-05 12:00 |
13:39:29.89 |
-05:57:52.7 |
HIP 66587 |
18.06 |
| 2026-08-06 00:00 |
13:39:32.16 |
-05:57:54.7 |
HIP 66587 |
18.28 |
| 2026-08-06 12:00 |
13:39:34.50 |
-05:57:57.0 |
HIP 66587 |
18.52 |
| 2026-08-07 00:00 |
13:39:36.91 |
-05:57:59.8 |
HIP 66587 |
18.77 |
| 2026-08-07 12:00 |
13:39:39.41 |
-05:58:03.1 |
HIP 66587 |
19.05 |
| 2026-08-08 00:00 |
13:39:41.98 |
-05:58:06.7 |
HIP 66587 |
19.35 |
| 2026-08-08 12:00 |
13:39:44.62 |
-05:58:10.8 |
HIP 66587 |
19.66 |
| 2026-08-09 00:00 |
13:39:47.34 |
-05:58:15.3 |
HIP 66587 |
20.01 |
| 2026-08-09 12:00 |
13:39:50.14 |
-05:58:20.3 |
HIP 66587 |
20.37 |
| 2026-08-10 00:00 |
13:39:53.00 |
-05:58:25.6 |
HIP 66587 |
20.76 |
| 2026-08-10 12:00 |
13:39:55.95 |
-05:58:31.4 |
HIP 66587 |
21.17 |
| 2026-08-11 00:00 |
13:39:58.96 |
-05:58:37.5 |
HIP 66587 |
21.61 |
| 2026-08-11 12:00 |
13:40:02.05 |
-05:58:44.1 |
HIP 66587 |
22.07 |
| 2026-08-12 00:00 |
13:40:05.22 |
-05:58:51.1 |
HIP 66587 |
22.56 |
| 2026-08-12 12:00 |
13:40:08.45 |
-05:58:58.4 |
HIP 66587 |
23.08 |
| 2026-08-13 00:00 |
13:40:11.76 |
-05:59:06.2 |
HIP 66587 |
23.62 |
| 2026-08-13 12:00 |
13:40:15.13 |
-05:59:14.4 |
HIP 66587 |
24.18 |
| 2026-08-14 00:00 |
13:40:18.58 |
-05:59:22.9 |
HIP 66764 |
24.54 |
| 2026-08-14 12:00 |
13:40:22.10 |
-05:59:31.8 |
HIP 66764 |
24.03 |
| 2026-08-15 00:00 |
13:40:25.69 |
-05:59:41.1 |
HIP 66764 |
23.52 |
| 2026-08-15 12:00 |
13:40:29.35 |
-05:59:50.8 |
HIP 66764 |
23.02 |
| 2026-08-16 00:00 |
13:40:33.08 |
-06:00:00.8 |
HIP 66764 |
22.54 |
| 2026-08-16 12:00 |
13:40:36.87 |
-06:00:11.2 |
HIP 66764 |
22.08 |
| 2026-08-17 00:00 |
13:40:40.74 |
-06:00:22.0 |
HIP 66764 |
21.64 |
| 2026-08-17 12:00 |
13:40:44.67 |
-06:00:33.1 |
HIP 66764 |
21.23 |
| 2026-08-18 00:00 |
13:40:48.67 |
-06:00:44.6 |
HIP 66764 |
20.84 |
| 2026-08-18 12:00 |
13:40:52.73 |
-06:00:56.4 |
HIP 66764 |
20.50 |
| 2026-08-19 00:00 |
13:40:56.87 |
-06:01:08.6 |
HIP 66764 |
20.19 |