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FOLLOW-UP RANKING ▹ 
FOLLOW-UP RANKING FOR PRESENT YEAR
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Last Update: 2024-09-18 12:31 UTC

Follow-up Ranking for present year 2024

Download ranking data (CSV file)

Overall Follow-up Ranking

Rank
Obs. code
Observatory name
(link to Delta-PL assignment)
 Cum. PL value
1 F52 Pan-STARRS 2, Haleakala 1658.992
2 I52 Steward Observatory, Mt. Lemmon Station 1587.815
3 F51 Pan-STARRS 1, Haleakala 1180.241
4 G96 Mt. Lemmon Survey 1057.497
5 V06 Catalina Sky Survey-Kuiper 561.654
6 Z84 Calar Alto-Schmidt 518.715
7 033 Karl Schwarzschild Observatory, Tautenburg 348.206
8 T12 University of Hawaii 88-inch telescope, Maunakea 335.537
9 T14 Canada-France-Hawaii Telescope, Maunakea 329.669
10 291 LPL/Spacewatch II 328.056
11 J95 Great Shefford 272.881
12 474 Mount John Observatory, Lake Tekapo 246.354
13 807 Cerro Tololo Observatory, La Serena 211.791
14 691 Steward Observatory, Kitt Peak-Spacewatch 166.308
15 H21 Astronomical Research Observatory, Westfield 147.568
16 H01 Magdalena Ridge Observatory, Socorro 139.918
17 H36 Sandlot Observatory, Scranton 121.584
18 J04 ESA Optical Ground Station, Tenerife 120.812
19 T08 ATLAS-MLO, Mauna Loa 116.285
20 695 Kitt Peak 112.718
21 T05 ATLAS-HKO, Haleakala 108.950
22 I93 St Pardon de Conques 104.389
23 L87 Moonbase South Observatory, Hakos 92.186
24 703 Catalina Sky Survey 81.027
25 W84 Cerro Tololo-DECam 80.857
26 V00 Kitt Peak-Bok 79.099
27 W68 ATLAS Chile, Rio Hurtado 73.973
28 O18 WFST, Lenghu 73.629
29 204 Schiaparelli Observatory 70.964
30 Y05 SONEAR Wykrota-CEAMIG, Serra da Piedade 65.744
31 C51 WISE 52.435
32 L34 Galhassin Robotic Telescope, Isnello 51.683
33 W16 Pleasant Groves Observatory 50.167
34 734 Farpoint Observatory, Eskridge 50.038
35 U52 Shasta Valley Observatory, Grenada 49.686
36 X09 Deep Random Survey, Rio Hurtado 49.423
37 K74 Muensterschwarzach Observatory, Schwarzach 45.960
38 958 Observatoire de Dax 45.417
39 M45 Starhopper Observatory, Sfantu Gheorghe 42.601
40 247 Roving Observer 40.279
41 L01 Visnjan Observatory, Tican 39.853
42 W94 MAP, San Pedro de Atacama 39.080
43 309 Cerro Paranal 31.579
44 C40 Kuban State University Astrophysical Observatory 31.298
45 O46 Daocheng Glacier Observatory 30.921
46 M49 IAS Remote Observatory, Hakos 25.091
47 C95 SATINO Remote Observatory, Haute Provence 23.969
48 M22 ATLAS South Africa, Sutherland 21.381
49 Z80 Northolt Branch Observatory 19.651
50 W95 Observatorio Panameno, San Pedro de Atacama 18.001

Big Surveys Follow-up Ranking

Rank
Obs. code
Observatory name
(link to Delta-PL assignment)
 Cum. PL value
1 F52 Pan-STARRS 2, Haleakala 1658.992
2 F51 Pan-STARRS 1, Haleakala 1180.241
3 G96 Mt. Lemmon Survey 1057.497
4 T08 ATLAS-MLO, Mauna Loa 116.285
5 T05 ATLAS-HKO, Haleakala 108.950
6 703 Catalina Sky Survey 81.027
7 V00 Kitt Peak-Bok 79.099
8 W68 ATLAS Chile, Rio Hurtado 73.973
9 C51 WISE 52.435
10 W94 MAP, San Pedro de Atacama 39.080
11 M22 ATLAS South Africa, Sutherland 21.381
12 K88 GINOP-KHK, Piszkesteto 8.625
13 I41 Palomar Mountain--ZTF 2.164
14 U68 JPL SynTrack Robotic Telescope, Auberry 0.181

All others Follow-up Ranking

Rank
Obs. code
Observatory name
(link to Delta-PL assignment)
 Cum. PL value
1 I52 Steward Observatory, Mt. Lemmon Station 1587.815
2 V06 Catalina Sky Survey-Kuiper 561.654
3 Z84 Calar Alto-Schmidt 518.715
4 033 Karl Schwarzschild Observatory, Tautenburg 348.206
5 T12 University of Hawaii 88-inch telescope, Maunakea 335.537
6 T14 Canada-France-Hawaii Telescope, Maunakea 329.669
7 291 LPL/Spacewatch II 328.056
8 J95 Great Shefford 272.881
9 474 Mount John Observatory, Lake Tekapo 246.354
10 807 Cerro Tololo Observatory, La Serena 211.791
11 691 Steward Observatory, Kitt Peak-Spacewatch 166.308
12 H21 Astronomical Research Observatory, Westfield 147.568
13 H01 Magdalena Ridge Observatory, Socorro 139.918
14 H36 Sandlot Observatory, Scranton 121.584
15 J04 ESA Optical Ground Station, Tenerife 120.812
16 695 Kitt Peak 112.718
17 I93 St Pardon de Conques 104.389
18 L87 Moonbase South Observatory, Hakos 92.186
19 W84 Cerro Tololo-DECam 80.857
20 O18 WFST, Lenghu 73.629
21 204 Schiaparelli Observatory 70.964
22 Y05 SONEAR Wykrota-CEAMIG, Serra da Piedade 65.744
23 L34 Galhassin Robotic Telescope, Isnello 51.683
24 W16 Pleasant Groves Observatory 50.167
25 734 Farpoint Observatory, Eskridge 50.038
26 U52 Shasta Valley Observatory, Grenada 49.686
27 X09 Deep Random Survey, Rio Hurtado 49.423
28 K74 Muensterschwarzach Observatory, Schwarzach 45.960
29 958 Observatoire de Dax 45.417
30 M45 Starhopper Observatory, Sfantu Gheorghe 42.601
31 247 Roving Observer 40.279
32 L01 Visnjan Observatory, Tican 39.853
33 309 Cerro Paranal 31.579
34 C40 Kuban State University Astrophysical Observatory 31.298
35 O46 Daocheng Glacier Observatory 30.921
36 M49 IAS Remote Observatory, Hakos 25.091
37 C95 SATINO Remote Observatory, Haute Provence 23.969
38 Z80 Northolt Branch Observatory 19.651
39 W95 Observatorio Panameno, San Pedro de Atacama 18.001
40 595 Farra d'Isonzo 17.356
41 104 San Marcello Pistoiese 15.748
42 G37 Lowell Discovery Telescope 14.601
43 290 Mt. Graham-VATT 14.395
44 N89 Xingming Observatory #2, Nanshan 14.055
45 B88 Bigmuskie Observatory, Mombercelli 13.133
46 Q06 Tarui Observatory, Tarui 12.839
47 900 Moriyama 12.767
48 L04 ROASTERR-1 Observatory, Cluj-Napoca 12.471
49 932 John J. McCarthy Obs., New Milford 12.289
50 K83 Beppe Forti Astronomical Observatory, Montelupo 12.128

Download .csv file with all the observations

Previous years Follow-up Ranking:

Follow-up Ranking for 2021

Follow-up Ranking for 2022

Follow-up Ranking for 2023

Follow-up Ranking for 2024

Computation method

The purpose of the present ranking is to provide a metrics to measure the performance and the contribution to the follow-up activity of several professional and amateurs telescopes. The page shows three tables: one is including all telescopes, one is including only big surveys telescopes, and one all but not big surveys telescopes.

The ranking is computed considering the priority value algorithm used to compute the Priority List. The approach is to compute the priority value (PV1) at the time of the first observation of the new dataset, without including in the orbit determination process the new set. Then, the priority value (PV2) is computed at the same time but including in the orbit determnation process also the new set. The Delta-PL value is computed as PV1 - PV2. The major contribution on the priority value improvement is obviously given by the uncertainty parameter shrinking, while the other observational parameters, which play a role in the priority list algorithm, such as visual magnitude, solar and lunar elongations and visibility windows,and so on, are pretty much the same or vary very little.

This service has been developed for the NEOROCKS (NEO Rapid Observation, Characterization And Key Simulation) Project, which has received funding from the European's Horizon 2020 research and innovation programme under grant agreement No 870403.