메타데이터
| 항목 |
값 |
| Designation |
419P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-03-15T12:20:00.761280Z |
| Orbit solution date (soln_date, UTC) |
2023-10-29T03:13:38Z |
| Obs used |
297 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
23.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-06-11.0000000 |
| e |
0.27849867 |
| q (au) |
2.542241 |
| a (au) |
3.523542 |
| i (deg) |
2.804422 |
| Ω (om, deg) |
40.425087 |
| ω (w, deg) |
187.263454 |
| M (ma, deg) |
121.968066 |
밝기
산란 + 전체 선형
$$
M_a = (15.031 + 2.720\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.031 |
| n |
2.720 |
| gf |
0.999 |
| gb |
-0.904 |
| k |
0.999 |
| 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) |
| 2026-05-12 00:00 |
05:27:52.62 |
+25:00:44.4 |
HIP 25463 |
15.60 |
| 2026-05-12 12:00 |
05:28:25.93 |
+25:01:08.9 |
HIP 25695 |
13.89 |
| 2026-05-13 00:00 |
05:28:59.32 |
+25:01:33.0 |
HIP 25695 |
8.42 |
| 2026-05-13 12:00 |
05:29:32.78 |
+25:01:56.8 |
HIP 25695 |
7.98 |
| 2026-05-14 00:00 |
05:30:06.32 |
+25:02:20.3 |
HIP 25695 |
13.11 |
| 2026-05-14 12:00 |
05:30:39.93 |
+25:02:43.4 |
HIP 25793 |
17.46 |
| 2026-05-15 00:00 |
05:31:13.62 |
+25:03:06.1 |
HIP 25929 |
11.18 |
| 2026-05-15 12:00 |
05:31:47.38 |
+25:03:28.6 |
HIP 25929 |
4.94 |
| 2026-05-16 00:00 |
05:32:21.20 |
+25:03:50.6 |
HIP 25929 |
6.42 |
| 2026-05-16 12:00 |
05:32:55.10 |
+25:04:12.3 |
HIP 25929 |
13.27 |
| 2026-05-17 00:00 |
05:33:29.07 |
+25:04:33.7 |
HIP 25929 |
20.73 |
| 2026-05-17 12:00 |
05:34:03.11 |
+25:04:54.7 |
HIP 26286 |
25.96 |
| 2026-05-18 00:00 |
05:34:37.21 |
+25:05:15.3 |
HIP 26286 |
19.16 |
| 2026-05-18 12:00 |
05:35:11.38 |
+25:05:35.5 |
HIP 26286 |
13.40 |
| 2026-05-19 00:00 |
05:35:45.61 |
+25:05:55.4 |
HIP 26286 |
10.58 |
| 2026-05-19 12:00 |
05:36:19.91 |
+25:06:14.9 |
HIP 26286 |
12.84 |
| 2026-05-20 00:00 |
05:36:54.28 |
+25:06:34.0 |
HIP 26286 |
18.42 |
| 2026-05-20 12:00 |
05:37:28.70 |
+25:06:52.7 |
HIP 26525 |
15.40 |
| 2026-05-21 00:00 |
05:38:03.19 |
+25:07:11.1 |
HIP 26525 |
9.56 |
| 2026-05-21 12:00 |
05:38:37.74 |
+25:07:29.1 |
HIP 26525 |
8.23 |
| 2026-05-22 00:00 |
05:39:12.35 |
+25:07:46.6 |
HIP 26525 |
12.92 |
| 2026-05-22 12:00 |
05:39:47.02 |
+25:08:03.8 |
HIP 26732 |
15.61 |
| 2026-05-23 00:00 |
05:40:21.75 |
+25:08:20.6 |
HIP 26732 |
9.42 |
| 2026-05-23 12:00 |
05:40:56.53 |
+25:08:37.0 |
HIP 26732 |
7.60 |
| 2026-05-24 00:00 |
05:41:31.37 |
+25:08:53.0 |
HIP 26732 |
12.29 |
| 2026-05-24 12:00 |
05:42:06.27 |
+25:09:08.6 |
HIP 26947 |
18.05 |
| 2026-05-25 00:00 |
05:42:41.23 |
+25:09:23.7 |
HIP 26947 |
13.36 |
| 2026-05-25 12:00 |
05:43:16.23 |
+25:09:38.5 |
HIP 26947 |
12.51 |
| 2026-05-26 00:00 |
05:43:51.30 |
+25:09:52.9 |
HIP 26947 |
16.13 |
| 2026-05-26 12:00 |
05:44:26.41 |
+25:10:06.8 |
HIP 26998 |
19.47 |
| 2026-05-27 00:00 |
05:45:01.58 |
+25:10:20.3 |
HIP 26998 |
24.60 |
| 2026-05-27 12:00 |
05:45:36.80 |
+25:10:33.4 |
HIP 27236 |
20.54 |
| 2026-05-28 00:00 |
05:46:12.07 |
+25:10:46.1 |
HIP 27236 |
17.92 |
| 2026-05-28 12:00 |
05:46:47.39 |
+25:10:58.4 |
HIP 27236 |
18.64 |
| 2026-05-29 00:00 |
05:47:22.77 |
+25:11:10.2 |
HIP 27236 |
22.40 |
| 2026-05-29 12:00 |
05:47:58.19 |
+25:11:21.7 |
HIP 27353 |
23.37 |
| 2026-05-30 00:00 |
05:48:33.66 |
+25:11:32.6 |
HIP 27353 |
26.21 |
| 2026-05-30 12:00 |
05:49:09.18 |
+25:11:43.2 |
HIP 27640 |
25.72 |
| 2026-05-31 00:00 |
05:49:44.74 |
+25:11:53.3 |
HIP 27640 |
17.70 |
| 2026-05-31 12:00 |
05:50:20.35 |
+25:12:03.0 |
HIP 27640 |
9.69 |
| 2026-06-01 00:00 |
05:50:56.01 |
+25:12:12.3 |
HIP 27640 |
2.13 |
| 2026-06-01 12:00 |
05:51:31.72 |
+25:12:21.1 |
HIP 27640 |
6.74 |
| 2026-06-02 00:00 |
05:52:07.47 |
+25:12:29.4 |
HIP 27640 |
14.73 |