C/2025 R3 (PANSTARRS)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2025 R3 (PANSTARRS) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2026-04-19T21:27:54.362880Z |
| Orbit solution date (soln_date, UTC) | 2026-05-08T13:42:11Z |
| Obs used | 801 |
| NEO | - |
| M1 | 11.900 |
| K1 | 11.000 |
| PC | 0.030 |
| Discovery observation (MPC, UTC) | 2025-09-08T11:13:22.022400Z |
| Discovery magnitude (MPC) | 19.85 i |
| Discovery observatory (MPC) | F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2026-01-08.0000000 |
| e | 1.00034903 |
| q (au) | 0.498612 |
| a (au) | -1428.565616 |
| i (deg) | 124.730770 |
| Ω (om, deg) | 38.693338 |
| ω (w, deg) | 162.225582 |
| M (ma, deg) | -0.001860 |
밝기
산란 + 전체 선형
$$ M_a = (11.164 + 5.318\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 11.164 |
| n | 5.318 |
| gf | 0.800 |
| gb | -0.500 |
| k | 0.800 |
| δ90 | 1.000 |
| 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 |
|---|---|---|---|
| 2025-09-07 | 2026-01-11 | -1.1541 | +0.535 |
| 2026-01-11 | 2026-03-28 | +2.6741 | -1.188 |
| 2026-03-28 | 2026-04-19 | +0.2665 | -0.954 |
| 2026-04-20 | 2026-05-19 | -19.2239 | -5.455 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-05-12 00:00 | 05:39:21.32 | -07:58:13.8 | HIP 26497 | 22.40 |
| 2026-05-12 12:00 | 05:41:56.99 | -08:07:44.0 | HIP 26876 | 6.02 |
| 2026-05-13 00:00 | 05:44:25.81 | -08:16:37.3 | HIP 26950 | 25.56 |
| 2026-05-13 12:00 | 05:46:48.18 | -08:24:56.7 | HIP 27384 | 18.35 |
| 2026-05-14 00:00 | 05:49:04.50 | -08:32:44.4 | HIP 27475 | 8.41 |
| 2026-05-14 12:00 | 05:51:15.14 | -08:40:03.0 | HIP 27586 | 22.09 |
| 2026-05-15 00:00 | 05:53:20.43 | -08:46:54.4 | HIP 27713 | 23.79 |
| 2026-05-15 12:00 | 05:55:20.70 | -08:53:20.7 | HIP 27959 | 18.70 |
| 2026-05-16 00:00 | 05:57:16.24 | -08:59:23.8 | HIP 28155 | 15.37 |
| 2026-05-16 12:00 | 05:59:07.33 | -09:05:05.2 | HIP 28318 | 12.14 |
| 2026-05-17 00:00 | 06:00:54.24 | -09:10:26.6 | HIP 28321 | 30.59 |
| 2026-05-17 12:00 | 06:02:37.19 | -09:15:29.5 | HIP 28598 | 37.83 |
| 2026-05-18 00:00 | 06:04:16.42 | -09:20:15.1 | HIP 28835 | 13.72 |
| 2026-05-18 12:00 | 06:05:52.13 | -09:24:44.7 | HIP 28835 | 12.49 |
| 2026-05-19 00:00 | 06:07:24.53 | -09:28:59.5 | HIP 29066 | 7.67 |
| 2026-05-19 12:00 | 06:08:53.80 | -09:33:00.6 | HIP 29153 | 5.96 |
| 2026-05-20 00:00 | 06:10:20.11 | -09:36:48.8 | HIP 29237 | 12.93 |
| 2026-05-20 12:00 | 06:11:43.61 | -09:40:25.1 | HIP 29361 | 6.56 |
| 2026-05-21 00:00 | 06:13:04.47 | -09:43:50.5 | HIP 29361 | 26.70 |
| 2026-05-21 12:00 | 06:14:22.82 | -09:47:05.6 | HIP 29607 | 16.97 |
| 2026-05-22 00:00 | 06:15:38.79 | -09:50:11.2 | HIP 29794 | 12.38 |
| 2026-05-22 12:00 | 06:16:52.51 | -09:53:07.9 | HIP 29794 | 7.87 |
| 2026-05-23 00:00 | 06:18:04.09 | -09:55:56.5 | HIP 29906 | 4.89 |
| 2026-05-23 12:00 | 06:19:13.64 | -09:58:37.5 | HIP 29906 | 20.91 |
| 2026-05-24 00:00 | 06:20:21.27 | -10:01:11.4 | HIP 30149 | 9.01 |
| 2026-05-24 12:00 | 06:21:27.07 | -10:03:38.8 | HIP 30149 | 15.42 |
| 2026-05-25 00:00 | 06:22:31.13 | -10:06:00.1 | HIP 30407 | 20.91 |
| 2026-05-25 12:00 | 06:23:33.54 | -10:08:15.8 | HIP 30407 | 15.79 |
| 2026-05-26 00:00 | 06:24:34.37 | -10:10:26.4 | HIP 30407 | 23.01 |
| 2026-05-26 12:00 | 06:25:33.71 | -10:12:32.1 | HIP 30634 | 14.84 |
| 2026-05-27 00:00 | 06:26:31.62 | -10:14:33.3 | HIP 30634 | 12.53 |
| 2026-05-27 12:00 | 06:27:28.17 | -10:16:30.5 | HIP 30634 | 22.24 |
| 2026-05-28 00:00 | 06:28:23.42 | -10:18:23.9 | HIP 30805 | 28.96 |
| 2026-05-28 12:00 | 06:29:17.43 | -10:20:13.8 | HIP 30986 | 20.27 |
| 2026-05-29 00:00 | 06:30:10.26 | -10:22:00.5 | HIP 30986 | 17.12 |
| 2026-05-29 12:00 | 06:31:01.96 | -10:23:44.3 | HIP 30986 | 22.60 |
| 2026-05-30 00:00 | 06:31:52.59 | -10:25:25.4 | HIP 30986 | 32.29 |
| 2026-05-30 12:00 | 06:32:42.18 | -10:27:04.0 | HIP 31332 | 37.52 |
| 2026-05-31 00:00 | 06:33:30.78 | -10:28:40.4 | HIP 31456 | 28.57 |
| 2026-05-31 12:00 | 06:34:18.45 | -10:30:14.8 | HIP 31456 | 16.84 |
| 2026-06-01 00:00 | 06:35:05.20 | -10:31:47.3 | HIP 31456 | 5.68 |
| 2026-06-01 12:00 | 06:35:51.10 | -10:33:18.2 | HIP 31496 | 5.78 |
| 2026-06-02 00:00 | 06:36:36.16 | -10:34:47.6 | HIP 31496 | 14.17 |