메타데이터
| 항목 |
값 |
| Designation |
C/2019 O3 (Palomar) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-03-08T21:27:10.964160Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:52:49Z |
| Obs used |
2138 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
6.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-07-26T05:21:28.800000Z |
| Discovery magnitude (MPC) |
19.30 r |
| Discovery observatory (MPC) |
I41 · Palomar Mountain–ZTF |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-03-22.0000000 |
| e |
1.00359769 |
| q (au) |
8.820012 |
| a (au) |
-2451.574872 |
| i (deg) |
89.818764 |
| Ω (om, deg) |
300.392129 |
| ω (w, deg) |
60.096036 |
| M (ma, deg) |
0.003070 |
밝기
산란 + 전체 선형
$$
M_a = (-1.506 + 5.405\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
-1.506 |
| n |
5.405 |
| gf |
0.999 |
| gb |
-0.626 |
| k |
1.000 |
| 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 |
08:57:21.75 |
+65:14:23.8 |
HIP 43928 |
17.39 |
| 2026-05-12 12:00 |
08:57:22.89 |
+65:12:10.9 |
HIP 43928 |
19.60 |
| 2026-05-13 00:00 |
08:57:24.19 |
+65:09:58.1 |
HIP 43910 |
18.24 |
| 2026-05-13 12:00 |
08:57:25.65 |
+65:07:45.4 |
HIP 43910 |
16.14 |
| 2026-05-14 00:00 |
08:57:27.26 |
+65:05:32.7 |
HIP 43910 |
14.09 |
| 2026-05-14 12:00 |
08:57:29.03 |
+65:03:20.2 |
HIP 43910 |
12.11 |
| 2026-05-15 00:00 |
08:57:30.94 |
+65:01:07.7 |
HIP 43910 |
10.23 |
| 2026-05-15 12:00 |
08:57:33.01 |
+64:58:55.4 |
HIP 43910 |
8.52 |
| 2026-05-16 00:00 |
08:57:35.23 |
+64:56:43.1 |
HIP 43910 |
7.12 |
| 2026-05-16 12:00 |
08:57:37.60 |
+64:54:31.0 |
HIP 43910 |
6.23 |
| 2026-05-17 00:00 |
08:57:40.12 |
+64:52:18.9 |
HIP 43910 |
6.08 |
| 2026-05-17 12:00 |
08:57:42.78 |
+64:50:07.0 |
HIP 43910 |
6.71 |
| 2026-05-18 00:00 |
08:57:45.59 |
+64:47:55.3 |
HIP 43910 |
7.95 |
| 2026-05-18 12:00 |
08:57:48.55 |
+64:45:43.7 |
HIP 43910 |
9.56 |
| 2026-05-19 00:00 |
08:57:51.64 |
+64:43:32.2 |
HIP 43903 |
10.78 |
| 2026-05-19 12:00 |
08:57:54.88 |
+64:41:20.9 |
HIP 43903 |
9.73 |
| 2026-05-20 00:00 |
08:57:58.26 |
+64:39:09.7 |
HIP 43903 |
9.13 |
| 2026-05-20 12:00 |
08:58:01.78 |
+64:36:58.7 |
HIP 43903 |
9.07 |
| 2026-05-21 00:00 |
08:58:05.44 |
+64:34:47.8 |
HIP 43903 |
9.54 |
| 2026-05-21 12:00 |
08:58:09.23 |
+64:32:37.2 |
HIP 43903 |
10.49 |
| 2026-05-22 00:00 |
08:58:13.16 |
+64:30:26.7 |
HIP 43903 |
11.80 |
| 2026-05-22 12:00 |
08:58:17.23 |
+64:28:16.4 |
HIP 44021 |
9.87 |
| 2026-05-23 00:00 |
08:58:21.42 |
+64:26:06.2 |
HIP 44021 |
7.95 |
| 2026-05-23 12:00 |
08:58:25.75 |
+64:23:56.3 |
HIP 44021 |
6.23 |
| 2026-05-24 00:00 |
08:58:30.21 |
+64:21:46.6 |
HIP 44021 |
4.94 |
| 2026-05-24 12:00 |
08:58:34.80 |
+64:19:37.1 |
HIP 44021 |
4.47 |
| 2026-05-25 00:00 |
08:58:39.52 |
+64:17:27.7 |
HIP 44021 |
5.05 |
| 2026-05-25 12:00 |
08:58:44.36 |
+64:15:18.6 |
HIP 44021 |
6.40 |
| 2026-05-26 00:00 |
08:58:49.33 |
+64:13:09.8 |
HIP 44021 |
8.15 |
| 2026-05-26 12:00 |
08:58:54.43 |
+64:11:01.1 |
HIP 44021 |
10.09 |
| 2026-05-27 00:00 |
08:58:59.64 |
+64:08:52.6 |
HIP 44021 |
12.12 |
| 2026-05-27 12:00 |
08:59:04.98 |
+64:06:44.4 |
HIP 44021 |
14.22 |
| 2026-05-28 00:00 |
08:59:10.45 |
+64:04:36.5 |
HIP 44021 |
16.35 |
| 2026-05-28 12:00 |
08:59:16.03 |
+64:02:28.7 |
HIP 44021 |
18.51 |
| 2026-05-29 00:00 |
08:59:21.73 |
+64:00:21.2 |
HIP 44021 |
20.68 |
| 2026-05-29 12:00 |
08:59:27.55 |
+63:58:14.0 |
HIP 44021 |
22.86 |
| 2026-05-30 00:00 |
08:59:33.48 |
+63:56:07.0 |
HIP 44021 |
25.05 |
| 2026-05-30 12:00 |
08:59:39.53 |
+63:54:00.2 |
HIP 44021 |
27.24 |
| 2026-05-31 00:00 |
08:59:45.69 |
+63:51:53.7 |
HIP 44107 |
26.65 |
| 2026-05-31 12:00 |
08:59:51.97 |
+63:49:47.5 |
HIP 44107 |
24.74 |
| 2026-06-01 00:00 |
08:59:58.36 |
+63:47:41.5 |
HIP 44107 |
22.89 |
| 2026-06-01 12:00 |
09:00:04.86 |
+63:45:35.8 |
HIP 44107 |
21.12 |
| 2026-06-02 00:00 |
09:00:11.48 |
+63:43:30.4 |
HIP 44107 |
19.46 |