메타데이터
| 항목 |
값 |
| Designation |
P/2019 A3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-08-01T21:04:24.133440Z |
| Orbit solution date (soln_date, UTC) |
2022-06-20T23:13:36Z |
| Obs used |
66 |
| NEO |
- |
| M1 |
19.100 |
| K1 |
5.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-01-03T06:27:04.320000Z |
| Discovery magnitude (MPC) |
21.90 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-01-04.0000000 |
| e |
0.26518544 |
| q (au) |
2.312949 |
| a (au) |
3.147663 |
| i (deg) |
15.365067 |
| Ω (om, deg) |
31.323079 |
| ω (w, deg) |
325.480485 |
| M (ma, deg) |
91.796650 |
밝기
산란 + 전체 선형
$$
M_a = (15.551 + 5.118\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.551 |
| n |
5.118 |
| gf |
0.999 |
| gb |
-0.907 |
| k |
0.996 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
09:42:33.59 |
+31:43:05.9 |
HIP 47661 |
8.88 |
| 2026-03-26 12:00 |
09:42:20.11 |
+31:41:38.3 |
HIP 47661 |
10.51 |
| 2026-03-27 00:00 |
09:42:06.93 |
+31:40:08.9 |
HIP 47661 |
12.68 |
| 2026-03-27 12:00 |
09:41:54.05 |
+31:38:37.5 |
HIP 47661 |
15.15 |
| 2026-03-28 00:00 |
09:41:41.47 |
+31:37:04.4 |
HIP 47477 |
12.91 |
| 2026-03-28 12:00 |
09:41:29.19 |
+31:35:29.4 |
HIP 47477 |
10.23 |
| 2026-03-29 00:00 |
09:41:17.22 |
+31:33:52.7 |
HIP 47477 |
7.89 |
| 2026-03-29 12:00 |
09:41:05.55 |
+31:32:14.2 |
HIP 47477 |
6.23 |
| 2026-03-30 00:00 |
09:40:54.19 |
+31:30:33.9 |
HIP 47477 |
5.82 |
| 2026-03-30 12:00 |
09:40:43.14 |
+31:28:51.9 |
HIP 47477 |
6.83 |
| 2026-03-31 00:00 |
09:40:32.39 |
+31:27:08.2 |
HIP 47477 |
8.75 |
| 2026-03-31 12:00 |
09:40:21.94 |
+31:25:22.9 |
HIP 47477 |
11.09 |
| 2026-04-01 00:00 |
09:40:11.80 |
+31:23:35.8 |
HIP 47477 |
13.61 |
| 2026-04-01 12:00 |
09:40:01.97 |
+31:21:47.1 |
HIP 47477 |
16.22 |
| 2026-04-02 00:00 |
09:39:52.45 |
+31:19:56.8 |
HIP 47477 |
18.86 |
| 2026-04-02 12:00 |
09:39:43.23 |
+31:18:04.9 |
HIP 47477 |
21.51 |
| 2026-04-03 00:00 |
09:39:34.32 |
+31:16:11.4 |
HIP 47477 |
24.15 |
| 2026-04-03 12:00 |
09:39:25.71 |
+31:14:16.3 |
HIP 47477 |
26.79 |
| 2026-04-04 00:00 |
09:39:17.42 |
+31:12:19.6 |
HIP 47222 |
27.99 |
| 2026-04-04 12:00 |
09:39:09.42 |
+31:10:21.5 |
HIP 47222 |
25.50 |
| 2026-04-05 00:00 |
09:39:01.74 |
+31:08:21.8 |
HIP 47222 |
23.09 |
| 2026-04-05 12:00 |
09:38:54.36 |
+31:06:20.6 |
HIP 47222 |
20.78 |
| 2026-04-06 00:00 |
09:38:47.29 |
+31:04:17.9 |
HIP 47222 |
18.57 |
| 2026-04-06 12:00 |
09:38:40.53 |
+31:02:13.8 |
HIP 47222 |
16.52 |
| 2026-04-07 00:00 |
09:38:34.07 |
+31:00:08.3 |
HIP 47324 |
14.45 |
| 2026-04-07 12:00 |
09:38:27.91 |
+30:58:01.3 |
HIP 47324 |
12.44 |
| 2026-04-08 00:00 |
09:38:22.06 |
+30:55:52.9 |
HIP 47324 |
10.61 |
| 2026-04-08 12:00 |
09:38:16.52 |
+30:53:43.1 |
HIP 47324 |
9.03 |
| 2026-04-09 00:00 |
09:38:11.28 |
+30:51:32.0 |
HIP 47324 |
7.85 |
| 2026-04-09 12:00 |
09:38:06.35 |
+30:49:19.5 |
HIP 47324 |
7.28 |
| 2026-04-10 00:00 |
09:38:01.72 |
+30:47:05.6 |
HIP 47324 |
7.44 |
| 2026-04-10 12:00 |
09:37:57.39 |
+30:44:50.5 |
HIP 47324 |
8.28 |
| 2026-04-11 00:00 |
09:37:53.36 |
+30:42:34.0 |
HIP 47324 |
9.63 |
| 2026-04-11 12:00 |
09:37:49.64 |
+30:40:16.2 |
HIP 47324 |
11.29 |
| 2026-04-12 00:00 |
09:37:46.22 |
+30:37:57.2 |
HIP 47324 |
13.16 |
| 2026-04-12 12:00 |
09:37:43.10 |
+30:35:36.9 |
HIP 47324 |
15.15 |
| 2026-04-13 00:00 |
09:37:40.28 |
+30:33:15.3 |
HIP 47324 |
17.23 |
| 2026-04-13 12:00 |
09:37:37.76 |
+30:30:52.5 |
HIP 47324 |
19.36 |
| 2026-04-14 00:00 |
09:37:35.54 |
+30:28:28.6 |
HIP 47324 |
21.54 |
| 2026-04-14 12:00 |
09:37:33.61 |
+30:26:03.4 |
HIP 47361 |
20.80 |
| 2026-04-15 00:00 |
09:37:31.99 |
+30:23:37.0 |
HIP 47361 |
20.14 |
| 2026-04-15 12:00 |
09:37:30.66 |
+30:21:09.5 |
HIP 47361 |
19.69 |
| 2026-04-16 00:00 |
09:37:29.62 |
+30:18:40.8 |
HIP 47361 |
19.48 |