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 · 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
$$
M_a = (6.254 + 5.539\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.254 |
| n |
5.539 |
| gf |
0.999 |
| gb |
-0.761 |
| 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 |
20:10:27.81 |
-07:59:26.9 |
HIP 99558 |
27.30 |
| 2026-05-12 12:00 |
20:10:27.18 |
-07:58:51.9 |
HIP 99558 |
27.59 |
| 2026-05-13 00:00 |
20:10:26.44 |
-07:58:17.3 |
HIP 99558 |
27.91 |
| 2026-05-13 12:00 |
20:10:25.58 |
-07:57:43.2 |
HIP 99558 |
28.27 |
| 2026-05-14 00:00 |
20:10:24.61 |
-07:57:09.5 |
HIP 99558 |
28.66 |
| 2026-05-14 12:00 |
20:10:23.52 |
-07:56:36.3 |
HIP 99558 |
29.08 |
| 2026-05-15 00:00 |
20:10:22.32 |
-07:56:03.6 |
HIP 99558 |
29.54 |
| 2026-05-15 12:00 |
20:10:21.01 |
-07:55:31.2 |
HIP 99558 |
30.02 |
| 2026-05-16 00:00 |
20:10:19.59 |
-07:54:59.4 |
HIP 99558 |
30.53 |
| 2026-05-16 12:00 |
20:10:18.05 |
-07:54:28.0 |
HIP 99558 |
31.07 |
| 2026-05-17 00:00 |
20:10:16.40 |
-07:53:57.1 |
HIP 99558 |
31.64 |
| 2026-05-17 12:00 |
20:10:14.63 |
-07:53:26.6 |
HIP 99558 |
32.23 |
| 2026-05-18 00:00 |
20:10:12.76 |
-07:52:56.6 |
HIP 99558 |
32.85 |
| 2026-05-18 12:00 |
20:10:10.77 |
-07:52:27.1 |
HIP 99558 |
33.50 |
| 2026-05-19 00:00 |
20:10:08.67 |
-07:51:58.0 |
HIP 99311 |
34.10 |
| 2026-05-19 12:00 |
20:10:06.46 |
-07:51:29.5 |
HIP 99311 |
34.42 |
| 2026-05-20 00:00 |
20:10:04.14 |
-07:51:01.4 |
HIP 99311 |
34.74 |
| 2026-05-20 12:00 |
20:10:01.71 |
-07:50:33.8 |
HIP 99311 |
35.06 |
| 2026-05-21 00:00 |
20:09:59.17 |
-07:50:06.6 |
HIP 99311 |
35.38 |
| 2026-05-21 12:00 |
20:09:56.52 |
-07:49:40.0 |
HIP 99311 |
35.70 |
| 2026-05-22 00:00 |
20:09:53.76 |
-07:49:13.9 |
HIP 99311 |
36.02 |
| 2026-05-22 12:00 |
20:09:50.89 |
-07:48:48.2 |
HIP 99311 |
36.35 |
| 2026-05-23 00:00 |
20:09:47.91 |
-07:48:23.0 |
HIP 99311 |
36.68 |
| 2026-05-23 12:00 |
20:09:44.82 |
-07:47:58.4 |
HIP 99311 |
37.02 |
| 2026-05-24 00:00 |
20:09:41.63 |
-07:47:34.2 |
HIP 99311 |
37.37 |
| 2026-05-24 12:00 |
20:09:38.33 |
-07:47:10.5 |
HIP 99311 |
37.72 |
| 2026-05-25 00:00 |
20:09:34.92 |
-07:46:47.4 |
HIP 99311 |
38.08 |
| 2026-05-25 12:00 |
20:09:31.40 |
-07:46:24.7 |
HIP 99311 |
38.46 |
| 2026-05-26 00:00 |
20:09:27.78 |
-07:46:02.5 |
HIP 99311 |
38.84 |
| 2026-05-26 12:00 |
20:09:24.05 |
-07:45:40.9 |
HIP 99311 |
39.24 |
| 2026-05-27 00:00 |
20:09:20.22 |
-07:45:19.7 |
HIP 99311 |
39.65 |
| 2026-05-27 12:00 |
20:09:16.28 |
-07:44:59.1 |
HIP 99311 |
40.08 |
| 2026-05-28 00:00 |
20:09:12.24 |
-07:44:38.9 |
HIP 99311 |
40.53 |
| 2026-05-28 12:00 |
20:09:08.10 |
-07:44:19.3 |
HIP 99094 |
40.69 |
| 2026-05-29 00:00 |
20:09:03.85 |
-07:44:00.2 |
HIP 99094 |
40.11 |
| 2026-05-29 12:00 |
20:08:59.50 |
-07:43:41.6 |
HIP 99094 |
39.53 |
| 2026-05-30 00:00 |
20:08:55.04 |
-07:43:23.6 |
HIP 99094 |
38.95 |
| 2026-05-30 12:00 |
20:08:50.49 |
-07:43:06.0 |
HIP 99094 |
38.37 |
| 2026-05-31 00:00 |
20:08:45.83 |
-07:42:49.0 |
HIP 99094 |
37.80 |
| 2026-05-31 12:00 |
20:08:41.07 |
-07:42:32.5 |
HIP 99094 |
37.23 |
| 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 |