메타데이터
| 항목 |
값 |
| Designation |
C/2023 R2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-08-12T01:57:59.866560Z |
| Orbit solution date (soln_date, UTC) |
2024-06-06T23:12:31Z |
| Obs used |
309 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
6.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-09-10T14:09:06.796800Z |
| Discovery magnitude (MPC) |
20.68 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-10-29.0000000 |
| e |
1.00072698 |
| q (au) |
0.905829 |
| a (au) |
-1246.024129 |
| i (deg) |
30.735653 |
| Ω (om, deg) |
188.987598 |
| ω (w, deg) |
337.188855 |
| M (ma, deg) |
-0.006456 |
밝기
산란 + 전체 선형
$$
M_a = (13.443 + 3.943\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.443 |
| n |
3.943 |
| gf |
1.000 |
| gb |
-0.721 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
20:05:10.81 |
+09:04:15.4 |
HIP 99010 |
12.70 |
| 2026-09-20 12:00 |
20:05:06.20 |
+09:02:18.7 |
HIP 99010 |
14.16 |
| 2026-09-21 00:00 |
20:05:01.72 |
+09:00:22.0 |
HIP 98862 |
15.56 |
| 2026-09-21 12:00 |
20:04:57.35 |
+08:58:25.4 |
HIP 98862 |
16.95 |
| 2026-09-22 00:00 |
20:04:53.11 |
+08:56:28.9 |
HIP 98862 |
18.50 |
| 2026-09-22 12:00 |
20:04:48.98 |
+08:54:32.5 |
HIP 98862 |
20.18 |
| 2026-09-23 00:00 |
20:04:44.98 |
+08:52:36.3 |
HIP 98862 |
21.95 |
| 2026-09-23 12:00 |
20:04:41.10 |
+08:50:40.2 |
HIP 98907 |
23.23 |
| 2026-09-24 00:00 |
20:04:37.34 |
+08:48:44.2 |
HIP 98907 |
21.63 |
| 2026-09-24 12:00 |
20:04:33.70 |
+08:46:48.4 |
HIP 98907 |
20.12 |
| 2026-09-25 00:00 |
20:04:30.18 |
+08:44:52.8 |
HIP 98907 |
18.72 |
| 2026-09-25 12:00 |
20:04:26.78 |
+08:42:57.3 |
HIP 98907 |
17.45 |
| 2026-09-26 00:00 |
20:04:23.50 |
+08:41:02.1 |
HIP 98907 |
16.34 |
| 2026-09-26 12:00 |
20:04:20.35 |
+08:39:07.0 |
HIP 98907 |
15.41 |
| 2026-09-27 00:00 |
20:04:17.31 |
+08:37:12.1 |
HIP 98907 |
14.70 |
| 2026-09-27 12:00 |
20:04:14.39 |
+08:35:17.4 |
HIP 98907 |
14.22 |
| 2026-09-28 00:00 |
20:04:11.60 |
+08:33:22.9 |
HIP 98907 |
14.01 |
| 2026-09-28 12:00 |
20:04:08.93 |
+08:31:28.6 |
HIP 98907 |
14.05 |
| 2026-09-29 00:00 |
20:04:06.38 |
+08:29:34.6 |
HIP 98907 |
14.36 |
| 2026-09-29 12:00 |
20:04:03.94 |
+08:27:40.8 |
HIP 98907 |
14.89 |
| 2026-09-30 00:00 |
20:04:01.63 |
+08:25:47.3 |
HIP 98907 |
15.64 |
| 2026-09-30 12:00 |
20:03:59.44 |
+08:23:54.0 |
HIP 98907 |
16.55 |
| 2026-10-01 00:00 |
20:03:57.38 |
+08:22:01.0 |
HIP 98830 |
17.21 |
| 2026-10-01 12:00 |
20:03:55.43 |
+08:20:08.3 |
HIP 98830 |
15.49 |
| 2026-10-02 00:00 |
20:03:53.60 |
+08:18:15.9 |
HIP 98830 |
13.83 |
| 2026-10-02 12:00 |
20:03:51.89 |
+08:16:23.7 |
HIP 98830 |
12.23 |
| 2026-10-03 00:00 |
20:03:50.31 |
+08:14:31.8 |
HIP 98830 |
10.72 |
| 2026-10-03 12:00 |
20:03:48.84 |
+08:12:40.3 |
HIP 98830 |
9.35 |
| 2026-10-04 00:00 |
20:03:47.50 |
+08:10:49.0 |
HIP 98830 |
8.17 |
| 2026-10-04 12:00 |
20:03:46.28 |
+08:08:58.1 |
HIP 98830 |
7.28 |
| 2026-10-05 00:00 |
20:03:45.18 |
+08:07:07.5 |
HIP 98830 |
6.76 |
| 2026-10-05 12:00 |
20:03:44.19 |
+08:05:17.3 |
HIP 98830 |
6.71 |
| 2026-10-06 00:00 |
20:03:43.33 |
+08:03:27.4 |
HIP 98830 |
7.13 |
| 2026-10-06 12:00 |
20:03:42.59 |
+08:01:37.8 |
HIP 98830 |
7.93 |
| 2026-10-07 00:00 |
20:03:41.97 |
+07:59:48.7 |
HIP 98758 |
8.93 |
| 2026-10-07 12:00 |
20:03:41.47 |
+07:57:59.9 |
HIP 98758 |
7.17 |
| 2026-10-08 00:00 |
20:03:41.09 |
+07:56:11.4 |
HIP 98758 |
5.47 |
| 2026-10-08 12:00 |
20:03:40.83 |
+07:54:23.4 |
HIP 98758 |
3.88 |
| 2026-10-09 00:00 |
20:03:40.70 |
+07:52:35.8 |
HIP 98758 |
2.61 |
| 2026-10-09 12:00 |
20:03:40.68 |
+07:50:48.6 |
HIP 98758 |
2.28 |
| 2026-10-10 00:00 |
20:03:40.78 |
+07:49:01.7 |
HIP 98758 |
3.17 |
| 2026-10-10 12:00 |
20:03:40.99 |
+07:47:15.4 |
HIP 98758 |
4.62 |
| 2026-10-11 00:00 |
20:03:41.33 |
+07:45:29.4 |
HIP 98758 |
6.24 |