메타데이터
| 항목 |
값 |
| Designation |
P/2019 V2 (Groeller) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-10-20T05:08:35.226240Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:45:21Z |
| Obs used |
115 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
11.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-11-03T12:01:16.032000Z |
| Discovery magnitude (MPC) |
20.70 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-07-26.0000000 |
| e |
0.33232040 |
| q (au) |
5.020653 |
| a (au) |
7.519555 |
| i (deg) |
11.801180 |
| Ω (om, deg) |
189.184282 |
| ω (w, deg) |
336.046255 |
| M (ma, deg) |
355.879070 |
밝기
산란 + 전체 선형
$$
M_a = (6.254 + 5.538\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.254 |
| n |
5.538 |
| 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 |
20:08:36.21 |
-07:42:16.5 |
HIP 99094 |
36.67 |
| 2026-06-01 12:00 |
20:08:31.25 |
-07:42:01.0 |
HIP 99094 |
36.12 |
| 2026-06-02 00:00 |
20:08:26.19 |
-07:41:46.1 |
HIP 99094 |
35.58 |
| 2026-06-02 12:00 |
20:08:21.03 |
-07:41:31.7 |
HIP 99094 |
35.07 |
| 2026-06-03 00:00 |
20:08:15.77 |
-07:41:17.8 |
HIP 99094 |
34.57 |
| 2026-06-03 12:00 |
20:08:10.42 |
-07:41:04.5 |
HIP 99094 |
34.10 |
| 2026-06-04 00:00 |
20:08:04.96 |
-07:40:51.7 |
HIP 99094 |
33.66 |
| 2026-06-04 12:00 |
20:07:59.41 |
-07:40:39.4 |
HIP 99094 |
33.24 |
| 2026-06-05 00:00 |
20:07:53.76 |
-07:40:27.7 |
HIP 99094 |
32.87 |
| 2026-06-05 12:00 |
20:07:48.02 |
-07:40:16.5 |
HIP 99094 |
32.53 |
| 2026-06-06 00:00 |
20:07:42.18 |
-07:40:05.8 |
HIP 99094 |
32.24 |
| 2026-06-06 12:00 |
20:07:36.25 |
-07:39:55.7 |
HIP 99094 |
32.00 |
| 2026-06-07 00:00 |
20:07:30.22 |
-07:39:46.1 |
HIP 99094 |
31.82 |
| 2026-06-07 12:00 |
20:07:24.10 |
-07:39:37.1 |
HIP 99094 |
31.69 |
| 2026-06-08 00:00 |
20:07:17.89 |
-07:39:28.6 |
HIP 99094 |
31.62 |
| 2026-06-08 12:00 |
20:07:11.58 |
-07:39:20.7 |
HIP 99094 |
31.61 |
| 2026-06-09 00:00 |
20:07:05.18 |
-07:39:13.3 |
HIP 99094 |
31.68 |
| 2026-06-09 12:00 |
20:06:58.70 |
-07:39:06.4 |
HIP 99094 |
31.81 |
| 2026-06-10 00:00 |
20:06:52.12 |
-07:39:00.1 |
HIP 99094 |
32.02 |
| 2026-06-10 12:00 |
20:06:45.45 |
-07:38:54.4 |
HIP 99094 |
32.31 |
| 2026-06-11 00:00 |
20:06:38.69 |
-07:38:49.2 |
HIP 99094 |
32.67 |
| 2026-06-11 12:00 |
20:06:31.84 |
-07:38:44.5 |
HIP 99094 |
33.10 |
| 2026-06-12 00:00 |
20:06:24.91 |
-07:38:40.5 |
HIP 98930 |
32.78 |
| 2026-06-12 12:00 |
20:06:17.89 |
-07:38:36.9 |
HIP 98930 |
31.93 |
| 2026-06-13 00:00 |
20:06:10.79 |
-07:38:33.9 |
HIP 98930 |
31.14 |
| 2026-06-13 12:00 |
20:06:03.60 |
-07:38:31.5 |
HIP 98930 |
30.41 |
| 2026-06-14 00:00 |
20:05:56.32 |
-07:38:29.7 |
HIP 98930 |
29.76 |
| 2026-06-14 12:00 |
20:05:48.97 |
-07:38:28.3 |
HIP 98809 |
28.63 |
| 2026-06-15 00:00 |
20:05:41.53 |
-07:38:27.6 |
HIP 98809 |
26.91 |
| 2026-06-15 12:00 |
20:05:34.01 |
-07:38:27.4 |
HIP 98809 |
25.20 |
| 2026-06-16 00:00 |
20:05:26.40 |
-07:38:27.8 |
HIP 98809 |
23.50 |
| 2026-06-16 12:00 |
20:05:18.72 |
-07:38:28.7 |
HIP 98809 |
21.81 |
| 2026-06-17 00:00 |
20:05:10.97 |
-07:38:30.2 |
HIP 98809 |
20.15 |
| 2026-06-17 12:00 |
20:05:03.13 |
-07:38:32.2 |
HIP 98809 |
18.53 |
| 2026-06-18 00:00 |
20:04:55.22 |
-07:38:34.8 |
HIP 98809 |
16.96 |
| 2026-06-18 12:00 |
20:04:47.23 |
-07:38:37.9 |
HIP 98809 |
15.48 |
| 2026-06-19 00:00 |
20:04:39.17 |
-07:38:41.6 |
HIP 98809 |
14.12 |
| 2026-06-19 12:00 |
20:04:31.03 |
-07:38:45.9 |
HIP 98809 |
12.93 |
| 2026-06-20 00:00 |
20:04:22.83 |
-07:38:50.7 |
HIP 98809 |
11.95 |
| 2026-06-20 12:00 |
20:04:14.55 |
-07:38:56.0 |
HIP 98809 |
11.27 |
| 2026-06-21 00:00 |
20:04:06.20 |
-07:39:01.9 |
HIP 98809 |
10.94 |
| 2026-06-21 12:00 |
20:03:57.79 |
-07:39:08.3 |
HIP 98809 |
11.01 |
| 2026-06-22 00:00 |
20:03:49.30 |
-07:39:15.3 |
HIP 98809 |
11.48 |