메타데이터
| 항목 |
값 |
| Designation |
P/2023 M2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-07-25T07:27:49.250880Z |
| Orbit solution date (soln_date, UTC) |
2024-10-05T23:12:36Z |
| Obs used |
117 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
18.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-09-01.0000000 |
| e |
0.36933815 |
| q (au) |
3.508349 |
| a (au) |
5.562964 |
| i (deg) |
19.725462 |
| Ω (om, deg) |
83.267905 |
| ω (w, deg) |
243.020623 |
| M (ma, deg) |
2.831128 |
밝기
산란 + 전체 선형
$$
M_a = (7.606 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.606 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
| 2023-07-25 |
2024-09-29 |
+22.4930 |
-12.377 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
06:19:38.65 |
+25:18:16.1 |
HIP 30144 |
14.77 |
| 2026-07-29 12:00 |
06:20:00.93 |
+25:18:41.7 |
HIP 30144 |
10.87 |
| 2026-07-30 00:00 |
06:20:23.15 |
+25:19:07.2 |
HIP 30144 |
8.33 |
| 2026-07-30 12:00 |
06:20:45.32 |
+25:19:32.6 |
HIP 30144 |
8.45 |
| 2026-07-31 00:00 |
06:21:07.42 |
+25:19:57.9 |
HIP 30144 |
11.12 |
| 2026-07-31 12:00 |
06:21:29.46 |
+25:20:23.2 |
HIP 30144 |
15.03 |
| 2026-08-01 00:00 |
06:21:51.44 |
+25:20:48.3 |
HIP 30289 |
16.94 |
| 2026-08-01 12:00 |
06:22:13.35 |
+25:21:13.4 |
HIP 30289 |
16.29 |
| 2026-08-02 00:00 |
06:22:35.20 |
+25:21:38.5 |
HIP 30289 |
17.11 |
| 2026-08-02 12:00 |
06:22:56.99 |
+25:22:03.4 |
HIP 30452 |
15.40 |
| 2026-08-03 00:00 |
06:23:18.71 |
+25:22:28.3 |
HIP 30452 |
10.52 |
| 2026-08-03 12:00 |
06:23:40.36 |
+25:22:53.1 |
HIP 30452 |
5.73 |
| 2026-08-04 00:00 |
06:24:01.95 |
+25:23:17.9 |
HIP 30452 |
1.78 |
| 2026-08-04 12:00 |
06:24:23.47 |
+25:23:42.6 |
HIP 30452 |
4.61 |
| 2026-08-05 00:00 |
06:24:44.93 |
+25:24:07.3 |
HIP 30452 |
9.31 |
| 2026-08-05 12:00 |
06:25:06.31 |
+25:24:31.9 |
HIP 30452 |
14.10 |
| 2026-08-06 00:00 |
06:25:27.63 |
+25:24:56.5 |
HIP 30622 |
10.56 |
| 2026-08-06 12:00 |
06:25:48.87 |
+25:25:21.0 |
HIP 30622 |
6.70 |
| 2026-08-07 00:00 |
06:26:10.04 |
+25:25:45.5 |
HIP 30622 |
4.97 |
| 2026-08-07 12:00 |
06:26:31.14 |
+25:26:09.9 |
HIP 30622 |
7.09 |
| 2026-08-08 00:00 |
06:26:52.17 |
+25:26:34.3 |
HIP 30622 |
11.01 |
| 2026-08-08 12:00 |
06:27:13.13 |
+25:26:58.7 |
HIP 30622 |
15.39 |
| 2026-08-09 00:00 |
06:27:34.01 |
+25:27:23.0 |
HIP 30857 |
18.82 |
| 2026-08-09 12:00 |
06:27:54.81 |
+25:27:47.3 |
HIP 30857 |
14.76 |
| 2026-08-10 00:00 |
06:28:15.54 |
+25:28:11.6 |
HIP 30857 |
11.24 |
| 2026-08-10 12:00 |
06:28:36.19 |
+25:28:35.9 |
HIP 30857 |
8.88 |
| 2026-08-11 00:00 |
06:28:56.76 |
+25:29:00.1 |
HIP 30857 |
8.67 |
| 2026-08-11 12:00 |
06:29:17.25 |
+25:29:24.3 |
HIP 30917 |
10.42 |
| 2026-08-12 00:00 |
06:29:37.67 |
+25:29:48.6 |
HIP 30917 |
11.47 |
| 2026-08-12 12:00 |
06:29:58.00 |
+25:30:12.8 |
HIP 30917 |
14.03 |
| 2026-08-13 00:00 |
06:30:18.25 |
+25:30:37.0 |
HIP 30917 |
17.44 |
| 2026-08-13 12:00 |
06:30:38.42 |
+25:31:01.2 |
HIP 30917 |
21.29 |
| 2026-08-14 00:00 |
06:30:58.51 |
+25:31:25.4 |
HIP 31031 |
22.03 |
| 2026-08-14 12:00 |
06:31:18.51 |
+25:31:49.7 |
HIP 31031 |
22.92 |
| 2026-08-15 00:00 |
06:31:38.43 |
+25:32:13.9 |
HIP 31031 |
24.62 |
| 2026-08-15 12:00 |
06:31:58.26 |
+25:32:38.1 |
HIP 31031 |
26.96 |
| 2026-08-16 00:00 |
06:32:18.00 |
+25:33:02.4 |
HIP 31031 |
29.78 |
| 2026-08-16 12:00 |
06:32:37.66 |
+25:33:26.7 |
HIP 31031 |
32.95 |
| 2026-08-17 00:00 |
06:32:57.23 |
+25:33:51.0 |
HIP 31031 |
36.36 |
| 2026-08-17 12:00 |
06:33:16.71 |
+25:34:15.3 |
HIP 31031 |
39.96 |
| 2026-08-18 00:00 |
06:33:36.10 |
+25:34:39.7 |
HIP 31232 |
43.33 |
| 2026-08-18 12:00 |
06:33:55.40 |
+25:35:04.1 |
HIP 31412 |
42.52 |
| 2026-08-19 00:00 |
06:34:14.61 |
+25:35:28.5 |
HIP 31412 |
41.59 |