메타데이터
| 항목 |
값 |
| Designation |
C/2021 N3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2020-08-19T14:19:37.767360Z |
| Orbit solution date (soln_date, UTC) |
2022-12-28T10:18:08Z |
| Obs used |
77 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
12.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-07-13T12:22:01.401600Z |
| Discovery magnitude (MPC) |
20.56 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-04-13.0000000 |
| e |
0.96427540 |
| q (au) |
5.711157 |
| a (au) |
159.866205 |
| i (deg) |
26.748126 |
| Ω (om, deg) |
337.494113 |
| ω (w, deg) |
304.695943 |
| M (ma, deg) |
0.293248 |
밝기
산란 + 전체 선형
$$
M_a = (4.887 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.887 |
| n |
6.000 |
| gf |
0.872 |
| gb |
-0.960 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
01:02:19.51 |
+26:45:07.9 |
HIP 4761 |
22.73 |
| 2026-06-01 12:00 |
01:02:25.81 |
+26:46:23.8 |
HIP 4761 |
24.62 |
| 2026-06-02 00:00 |
01:02:32.06 |
+26:47:39.7 |
HIP 5007 |
24.62 |
| 2026-06-02 12:00 |
01:02:38.25 |
+26:48:55.5 |
HIP 5007 |
24.13 |
| 2026-06-03 00:00 |
01:02:44.40 |
+26:50:11.3 |
HIP 5007 |
23.78 |
| 2026-06-03 12:00 |
01:02:50.49 |
+26:51:26.9 |
HIP 5007 |
23.59 |
| 2026-06-04 00:00 |
01:02:56.53 |
+26:52:42.5 |
HIP 5007 |
23.55 |
| 2026-06-04 12:00 |
01:03:02.52 |
+26:53:58.0 |
HIP 5007 |
23.66 |
| 2026-06-05 00:00 |
01:03:08.46 |
+26:55:13.5 |
HIP 5007 |
23.91 |
| 2026-06-05 12:00 |
01:03:14.35 |
+26:56:28.8 |
HIP 5007 |
24.31 |
| 2026-06-06 00:00 |
01:03:20.18 |
+26:57:44.0 |
HIP 5007 |
24.83 |
| 2026-06-06 12:00 |
01:03:25.97 |
+26:58:59.2 |
HIP 5007 |
25.48 |
| 2026-06-07 00:00 |
01:03:31.69 |
+27:00:14.2 |
HIP 5007 |
26.24 |
| 2026-06-07 12:00 |
01:03:37.37 |
+27:01:29.2 |
HIP 5007 |
27.09 |
| 2026-06-08 00:00 |
01:03:42.99 |
+27:02:44.0 |
HIP 5007 |
28.03 |
| 2026-06-08 12:00 |
01:03:48.55 |
+27:03:58.7 |
HIP 5007 |
29.05 |
| 2026-06-09 00:00 |
01:03:54.07 |
+27:05:13.3 |
HIP 5007 |
30.14 |
| 2026-06-09 12:00 |
01:03:59.52 |
+27:06:27.9 |
HIP 5007 |
31.29 |
| 2026-06-10 00:00 |
01:04:04.92 |
+27:07:42.2 |
HIP 5007 |
32.48 |
| 2026-06-10 12:00 |
01:04:10.27 |
+27:08:56.5 |
HIP 5007 |
33.73 |
| 2026-06-11 00:00 |
01:04:15.56 |
+27:10:10.7 |
HIP 5007 |
35.00 |
| 2026-06-11 12:00 |
01:04:20.79 |
+27:11:24.7 |
HIP 5007 |
36.32 |
| 2026-06-12 00:00 |
01:04:25.97 |
+27:12:38.6 |
HIP 5177 |
36.73 |
| 2026-06-12 12:00 |
01:04:31.08 |
+27:13:52.3 |
HIP 5177 |
36.97 |
| 2026-06-13 00:00 |
01:04:36.15 |
+27:15:06.0 |
HIP 5177 |
37.28 |
| 2026-06-13 12:00 |
01:04:41.15 |
+27:16:19.4 |
HIP 5177 |
37.67 |
| 2026-06-14 00:00 |
01:04:46.10 |
+27:17:32.8 |
HIP 5279 |
36.64 |
| 2026-06-14 12:00 |
01:04:50.98 |
+27:18:46.0 |
HIP 5279 |
35.58 |
| 2026-06-15 00:00 |
01:04:55.81 |
+27:19:59.0 |
HIP 5279 |
34.59 |
| 2026-06-15 12:00 |
01:05:00.58 |
+27:21:11.9 |
HIP 5279 |
33.65 |
| 2026-06-16 00:00 |
01:05:05.29 |
+27:22:24.6 |
HIP 5279 |
32.79 |
| 2026-06-16 12:00 |
01:05:09.94 |
+27:23:37.2 |
HIP 5279 |
31.99 |
| 2026-06-17 00:00 |
01:05:14.53 |
+27:24:49.6 |
HIP 5279 |
31.26 |
| 2026-06-17 12:00 |
01:05:19.06 |
+27:26:01.8 |
HIP 5279 |
30.61 |
| 2026-06-18 00:00 |
01:05:23.53 |
+27:27:13.9 |
HIP 5279 |
30.05 |
| 2026-06-18 12:00 |
01:05:27.93 |
+27:28:25.8 |
HIP 5279 |
29.56 |
| 2026-06-19 00:00 |
01:05:32.28 |
+27:29:37.5 |
HIP 5279 |
29.16 |
| 2026-06-19 12:00 |
01:05:36.57 |
+27:30:49.0 |
HIP 5279 |
28.85 |
| 2026-06-20 00:00 |
01:05:40.79 |
+27:32:00.4 |
HIP 5279 |
28.63 |
| 2026-06-20 12:00 |
01:05:44.95 |
+27:33:11.5 |
HIP 5279 |
28.49 |
| 2026-06-21 00:00 |
01:05:49.05 |
+27:34:22.5 |
HIP 5279 |
28.44 |
| 2026-06-21 12:00 |
01:05:53.09 |
+27:35:33.3 |
HIP 5279 |
28.48 |
| 2026-06-22 00:00 |
01:05:57.07 |
+27:36:43.9 |
HIP 5279 |
28.61 |