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) |
| 2026-07-29 00:00 |
20:22:42.71 |
+12:00:29.2 |
HIP 100383 |
20.07 |
| 2026-07-29 12:00 |
20:22:29.35 |
+11:59:26.5 |
HIP 100383 |
17.80 |
| 2026-07-30 00:00 |
20:22:16.02 |
+11:58:22.8 |
HIP 100383 |
15.96 |
| 2026-07-30 12:00 |
20:22:02.70 |
+11:57:18.0 |
HIP 100383 |
14.73 |
| 2026-07-31 00:00 |
20:21:49.41 |
+11:56:12.2 |
HIP 100383 |
14.25 |
| 2026-07-31 12:00 |
20:21:36.15 |
+11:55:05.5 |
HIP 100383 |
14.59 |
| 2026-08-01 00:00 |
20:21:22.92 |
+11:53:57.7 |
HIP 100383 |
15.72 |
| 2026-08-01 12:00 |
20:21:09.71 |
+11:52:48.9 |
HIP 100383 |
17.47 |
| 2026-08-02 00:00 |
20:20:56.53 |
+11:51:39.1 |
HIP 100383 |
19.68 |
| 2026-08-02 12:00 |
20:20:43.38 |
+11:50:28.3 |
HIP 100383 |
22.21 |
| 2026-08-03 00:00 |
20:20:30.27 |
+11:49:16.6 |
HIP 100262 |
21.69 |
| 2026-08-03 12:00 |
20:20:17.18 |
+11:48:03.9 |
HIP 100262 |
19.98 |
| 2026-08-04 00:00 |
20:20:04.14 |
+11:46:50.2 |
HIP 100262 |
18.73 |
| 2026-08-04 12:00 |
20:19:51.13 |
+11:45:35.6 |
HIP 100262 |
18.03 |
| 2026-08-05 00:00 |
20:19:38.16 |
+11:44:20.0 |
HIP 100262 |
17.94 |
| 2026-08-05 12:00 |
20:19:25.23 |
+11:43:03.5 |
HIP 100262 |
18.49 |
| 2026-08-06 00:00 |
20:19:12.34 |
+11:41:46.0 |
HIP 100262 |
19.60 |
| 2026-08-06 12:00 |
20:18:59.49 |
+11:40:27.7 |
HIP 100262 |
21.19 |
| 2026-08-07 00:00 |
20:18:46.68 |
+11:39:08.4 |
HIP 100262 |
23.16 |
| 2026-08-07 12:00 |
20:18:33.92 |
+11:37:48.2 |
HIP 100262 |
25.42 |
| 2026-08-08 00:00 |
20:18:21.21 |
+11:36:27.1 |
HIP 100262 |
27.89 |
| 2026-08-08 12:00 |
20:18:08.55 |
+11:35:05.1 |
HIP 100262 |
30.53 |
| 2026-08-09 00:00 |
20:17:55.93 |
+11:33:42.3 |
HIP 100262 |
33.29 |
| 2026-08-09 12:00 |
20:17:43.37 |
+11:32:18.6 |
HIP 100262 |
36.15 |
| 2026-08-10 00:00 |
20:17:30.86 |
+11:30:54.0 |
HIP 99921 |
37.06 |
| 2026-08-10 12:00 |
20:17:18.40 |
+11:29:28.5 |
HIP 99921 |
37.17 |
| 2026-08-11 00:00 |
20:17:06.00 |
+11:28:02.2 |
HIP 99921 |
37.59 |
| 2026-08-11 12:00 |
20:16:53.65 |
+11:26:35.1 |
HIP 99921 |
38.32 |
| 2026-08-12 00:00 |
20:16:41.37 |
+11:25:07.2 |
HIP 99912 |
38.10 |
| 2026-08-12 12:00 |
20:16:29.14 |
+11:23:38.5 |
HIP 99912 |
36.29 |
| 2026-08-13 00:00 |
20:16:16.98 |
+11:22:08.9 |
HIP 99912 |
34.69 |
| 2026-08-13 12:00 |
20:16:04.87 |
+11:20:38.6 |
HIP 99912 |
33.33 |
| 2026-08-14 00:00 |
20:15:52.84 |
+11:19:07.5 |
HIP 99912 |
32.25 |
| 2026-08-14 12:00 |
20:15:40.86 |
+11:17:35.6 |
HIP 99912 |
31.46 |
| 2026-08-15 00:00 |
20:15:28.96 |
+11:16:03.0 |
HIP 99912 |
31.00 |
| 2026-08-15 12:00 |
20:15:17.12 |
+11:14:29.6 |
HIP 99912 |
30.86 |
| 2026-08-16 00:00 |
20:15:05.35 |
+11:12:55.5 |
HIP 99912 |
31.05 |
| 2026-08-16 12:00 |
20:14:53.65 |
+11:11:20.7 |
HIP 99912 |
31.57 |
| 2026-08-17 00:00 |
20:14:42.02 |
+11:09:45.2 |
HIP 99644 |
30.23 |
| 2026-08-17 12:00 |
20:14:30.47 |
+11:08:09.0 |
HIP 99644 |
27.17 |
| 2026-08-18 00:00 |
20:14:18.99 |
+11:06:32.1 |
HIP 99644 |
24.15 |
| 2026-08-18 12:00 |
20:14:07.58 |
+11:04:54.5 |
HIP 99644 |
21.21 |
| 2026-08-19 00:00 |
20:13:56.25 |
+11:03:16.3 |
HIP 99644 |
18.36 |