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 · University of Arizona 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 |
-0.998 |
| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
06:40:07.40 |
+10:56:45.5 |
HIP 31912 |
4.49 |
| 2026-06-03 00:00 |
06:40:52.81 |
+10:57:13.0 |
HIP 32012 |
6.69 |
| 2026-06-03 12:00 |
06:41:38.29 |
+10:57:39.2 |
HIP 32012 |
5.76 |
| 2026-06-04 00:00 |
06:42:23.84 |
+10:58:04.1 |
HIP 32012 |
16.49 |
| 2026-06-04 12:00 |
06:43:09.48 |
+10:58:27.8 |
HIP 32220 |
12.18 |
| 2026-06-05 00:00 |
06:43:55.19 |
+10:58:50.3 |
HIP 32220 |
11.51 |
| 2026-06-05 12:00 |
06:44:40.98 |
+10:59:11.4 |
HIP 32337 |
14.72 |
| 2026-06-06 00:00 |
06:45:26.84 |
+10:59:31.4 |
HIP 32337 |
15.89 |
| 2026-06-06 12:00 |
06:46:12.78 |
+10:59:50.0 |
HIP 32506 |
12.61 |
| 2026-06-07 00:00 |
06:46:58.79 |
+11:00:07.4 |
HIP 32506 |
2.95 |
| 2026-06-07 12:00 |
06:47:44.88 |
+11:00:23.6 |
HIP 32506 |
10.68 |
| 2026-06-08 00:00 |
06:48:31.04 |
+11:00:38.4 |
HIP 32606 |
15.56 |
| 2026-06-08 12:00 |
06:49:17.27 |
+11:00:52.0 |
HIP 32606 |
22.17 |
| 2026-06-09 00:00 |
06:50:03.58 |
+11:01:04.4 |
HIP 32895 |
25.72 |
| 2026-06-09 12:00 |
06:50:49.95 |
+11:01:15.4 |
HIP 32895 |
20.05 |
| 2026-06-10 00:00 |
06:51:36.40 |
+11:01:25.2 |
HIP 32962 |
14.22 |
| 2026-06-10 12:00 |
06:52:22.92 |
+11:01:33.7 |
HIP 33082 |
14.70 |
| 2026-06-11 00:00 |
06:53:09.50 |
+11:01:41.0 |
HIP 33082 |
3.67 |
| 2026-06-11 12:00 |
06:53:56.16 |
+11:01:46.9 |
HIP 33121 |
0.64 |
| 2026-06-12 00:00 |
06:54:42.88 |
+11:01:51.6 |
HIP 33192 |
3.77 |
| 2026-06-12 12:00 |
06:55:29.67 |
+11:01:55.0 |
HIP 33192 |
15.03 |
| 2026-06-13 00:00 |
06:56:16.53 |
+11:01:57.2 |
HIP 33192 |
26.49 |
| 2026-06-13 12:00 |
06:57:03.45 |
+11:01:58.0 |
HIP 33192 |
38.00 |
| 2026-06-14 00:00 |
06:57:50.44 |
+11:01:57.6 |
HIP 33667 |
27.99 |
| 2026-06-14 12:00 |
06:58:37.49 |
+11:01:55.8 |
HIP 33667 |
17.27 |
| 2026-06-15 00:00 |
06:59:24.60 |
+11:01:52.8 |
HIP 33667 |
8.88 |
| 2026-06-15 12:00 |
07:00:11.78 |
+11:01:48.5 |
HIP 33667 |
11.27 |
| 2026-06-16 00:00 |
07:00:59.02 |
+11:01:43.0 |
HIP 33667 |
21.06 |
| 2026-06-16 12:00 |
07:01:46.32 |
+11:01:36.1 |
HIP 33789 |
26.79 |
| 2026-06-17 00:00 |
07:02:33.68 |
+11:01:27.9 |
HIP 34033 |
16.39 |
| 2026-06-17 12:00 |
07:03:21.10 |
+11:01:18.5 |
HIP 34033 |
5.91 |
| 2026-06-18 00:00 |
07:04:08.57 |
+11:01:07.8 |
HIP 34033 |
8.50 |
| 2026-06-18 12:00 |
07:04:56.11 |
+11:00:55.8 |
HIP 34231 |
17.89 |
| 2026-06-19 00:00 |
07:05:43.70 |
+11:00:42.5 |
HIP 34231 |
12.79 |
| 2026-06-19 12:00 |
07:06:31.34 |
+11:00:27.9 |
HIP 34231 |
16.74 |
| 2026-06-20 00:00 |
07:07:19.04 |
+11:00:12.1 |
HIP 34384 |
10.27 |
| 2026-06-20 12:00 |
07:08:06.80 |
+10:59:54.9 |
HIP 34450 |
7.20 |
| 2026-06-21 00:00 |
07:08:54.61 |
+10:59:36.5 |
HIP 34450 |
7.29 |
| 2026-06-21 12:00 |
07:09:42.47 |
+10:59:16.9 |
HIP 34627 |
17.51 |
| 2026-06-22 00:00 |
07:10:30.39 |
+10:58:55.9 |
HIP 34627 |
14.43 |