메타데이터
| 항목 |
값 |
| Designation |
P/2019 B2 (Groeller) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-06-08T00:39:50.480640Z |
| Orbit solution date (soln_date, UTC) |
2021-05-31T22:43:02Z |
| Obs used |
187 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
25.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-01-26T07:32:12.192000Z |
| Discovery magnitude (MPC) |
18.00 G |
| Discovery observatory (MPC) |
703 · Catalina Sky Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-03-01.0000000 |
| e |
0.37290156 |
| q (au) |
2.416517 |
| a (au) |
3.853490 |
| i (deg) |
16.829150 |
| Ω (om, deg) |
176.459298 |
| ω (w, deg) |
358.709921 |
| M (ma, deg) |
347.097338 |
밝기
산란 + 전체 선형
$$
M_a = (10.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.865 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.503 |
| 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 |
06:08:59.48 |
+10:17:46.7 |
HIP 29254 |
19.97 |
| 2026-05-12 12:00 |
06:09:40.79 |
+10:19:06.2 |
HIP 29254 |
11.67 |
| 2026-05-13 00:00 |
06:10:22.22 |
+10:20:24.6 |
HIP 29316 |
8.09 |
| 2026-05-13 12:00 |
06:11:03.75 |
+10:21:41.7 |
HIP 29316 |
3.32 |
| 2026-05-14 00:00 |
06:11:45.40 |
+10:22:57.8 |
HIP 29446 |
8.07 |
| 2026-05-14 12:00 |
06:12:27.16 |
+10:24:12.6 |
HIP 29446 |
5.03 |
| 2026-05-15 00:00 |
06:13:09.04 |
+10:25:26.3 |
HIP 29508 |
8.53 |
| 2026-05-15 12:00 |
06:13:51.02 |
+10:26:38.8 |
HIP 29537 |
13.10 |
| 2026-05-16 00:00 |
06:14:33.11 |
+10:27:50.1 |
HIP 29537 |
20.68 |
| 2026-05-16 12:00 |
06:15:15.31 |
+10:29:00.3 |
HIP 29752 |
15.78 |
| 2026-05-17 00:00 |
06:15:57.61 |
+10:30:09.3 |
HIP 29752 |
13.25 |
| 2026-05-17 12:00 |
06:16:40.02 |
+10:31:17.0 |
HIP 29752 |
17.92 |
| 2026-05-18 00:00 |
06:17:22.54 |
+10:32:23.6 |
HIP 29752 |
26.22 |
| 2026-05-18 12:00 |
06:18:05.16 |
+10:33:29.0 |
HIP 30010 |
19.20 |
| 2026-05-19 00:00 |
06:18:47.88 |
+10:34:33.2 |
HIP 30010 |
15.23 |
| 2026-05-19 12:00 |
06:19:30.71 |
+10:35:36.2 |
HIP 30010 |
17.84 |
| 2026-05-20 00:00 |
06:20:13.63 |
+10:36:38.0 |
HIP 30072 |
25.07 |
| 2026-05-20 12:00 |
06:20:56.65 |
+10:37:38.6 |
HIP 30072 |
29.27 |
| 2026-05-21 00:00 |
06:21:39.78 |
+10:38:38.0 |
HIP 30402 |
30.51 |
| 2026-05-21 12:00 |
06:22:23.00 |
+10:39:36.2 |
HIP 30402 |
20.66 |
| 2026-05-22 00:00 |
06:23:06.32 |
+10:40:33.1 |
HIP 30402 |
12.25 |
| 2026-05-22 12:00 |
06:23:49.73 |
+10:41:28.9 |
HIP 30402 |
10.10 |
| 2026-05-23 00:00 |
06:24:33.24 |
+10:42:23.4 |
HIP 30529 |
13.23 |
| 2026-05-23 12:00 |
06:25:16.84 |
+10:43:16.7 |
HIP 30529 |
12.83 |
| 2026-05-24 00:00 |
06:26:00.53 |
+10:44:08.8 |
HIP 30529 |
19.64 |
| 2026-05-24 12:00 |
06:26:44.32 |
+10:44:59.7 |
HIP 30602 |
25.92 |
| 2026-05-25 00:00 |
06:27:28.20 |
+10:45:49.4 |
HIP 30886 |
27.29 |
| 2026-05-25 12:00 |
06:28:12.17 |
+10:46:37.8 |
HIP 30905 |
17.67 |
| 2026-05-26 00:00 |
06:28:56.23 |
+10:47:25.0 |
HIP 30905 |
9.57 |
| 2026-05-26 12:00 |
06:29:40.38 |
+10:48:11.0 |
HIP 30905 |
10.33 |
| 2026-05-27 00:00 |
06:30:24.61 |
+10:48:55.8 |
HIP 30905 |
18.95 |
| 2026-05-27 12:00 |
06:31:08.94 |
+10:49:39.3 |
HIP 31111 |
18.25 |
| 2026-05-28 00:00 |
06:31:53.35 |
+10:50:21.7 |
HIP 31111 |
16.06 |
| 2026-05-28 12:00 |
06:32:37.84 |
+10:51:02.7 |
HIP 31111 |
20.56 |
| 2026-05-29 00:00 |
06:33:22.43 |
+10:51:42.6 |
HIP 31411 |
28.74 |
| 2026-05-29 12:00 |
06:34:07.09 |
+10:52:21.2 |
HIP 31465 |
19.83 |
| 2026-05-30 00:00 |
06:34:51.84 |
+10:52:58.6 |
HIP 31465 |
9.09 |
| 2026-05-30 12:00 |
06:35:36.68 |
+10:53:34.7 |
HIP 31465 |
3.77 |
| 2026-05-31 00:00 |
06:36:21.60 |
+10:54:09.6 |
HIP 31465 |
13.76 |
| 2026-05-31 12:00 |
06:37:06.60 |
+10:54:43.3 |
HIP 31662 |
8.23 |
| 2026-06-01 00:00 |
06:37:51.68 |
+10:55:15.7 |
HIP 31662 |
5.44 |
| 2026-06-01 12:00 |
06:38:36.84 |
+10:55:46.9 |
HIP 31662 |
15.41 |
| 2026-06-02 00:00 |
06:39:22.08 |
+10:56:16.9 |
HIP 31912 |
12.24 |