Celebrating the Beauty of the Night Sky
MN
Imaging the Planet Neptune
Neptune Ephemeris for the next 18 months
DateElongationTransitmVDiameterIlluminationIllum ArcsecTilt
2024-03-0115.9°54°+8.0 mV2.21"100 %4-21.8° SP
2024-04-0113.9°55°+8.0 mV2.21"100 %4-21.4° SP
2024-05-0142.2°55°+7.9 mV2.23"100 %4-21.1° SP
2024-06-0171.3°55°+7.9 mV2.26"100 %4-20.8° SP
2024-07-0199.7°55°+7.9 mV2.30"100 %4-20.7° SP
2024-08-01129.5°55°+7.8 mV2.34"100 %4-20.8° SP
2024-09-01160°55°+7.8 mV2.36"100 %4-21.0° SP
2024-10-01169.8°55°+7.8 mV2.36"100 %4-21.2° SP
2024-11-01138.4°54°+7.8 mV2.34"100 %4-21.5° SP
2024-12-01107.9°54°+7.9 mV2.31"100 %4-21.6° SP
2025-01-0176.5°54°+7.9 mV2.27"100 %4-21.6° SP
2025-02-0145.6°54°+7.9 mV2.23"100 %4-21.4° SP
2025-03-0118.3°55°+8.0 mV2.21"100 %4-21.1° SP
2025-04-0111.5°55°+8.0 mV2.21"100 %4-20.7° SP
2025-05-0139.8°57°+7.9 mV2.23"100 %4-20.3° SP
2025-06-0168.9°57°+7.9 mV2.26"100 %4-20.0° SP
2025-07-0197.3°57°+7.9 mV2.30"100 %4-19.9° SP
2025-08-01127°57°+7.8 mV2.33"100 %4-19.9° SP
Next 5 Neptune Oppositions
All Neptune Oppositions 2000 - 2049 AD
DateTransitmVDiameterIllum ArcsecTilt
2023-09-1954° alt+7.8 mV2.36"4-19.9° SP
2024-09-2155° alt+7.8 mV2.36"4-19.9° SP
2025-09-2357° alt+7.8 mV2.36"4-19.9° SP
2026-09-2657° alt+7.8 mV2.36"4-19.9° SP
2027-09-2857° alt+7.8 mV2.37"4-19.9° SP
2028-09-3058° alt+7.8 mV2.37"4-19.9° SP
2029-10-0259° alt+7.8 mV2.37"4-19.9° SP
2030-10-0560° alt+7.8 mV2.37"4-19.9° SP
2031-10-0761° alt+7.8 mV2.37"4-19.9° SP
2032-10-0961° alt+7.8 mV2.37"4-19.9° SP
Upcoming Neptune Planetary Conjunctions
DateSeparationSolar ElongCloser PlanetSizeIllumFurther PlanetSizeIllum
2000-02-220.49°28°Venus11.6"89%Neptune2.2"100%
2002-02-240.49°26°Mercury6.7"64%Neptune2.2"100%
2003-03-120.18°40°Venus14.9"74%Neptune2.2"100%
2008-01-220.27°19°Mercury7.1"53%Neptune2.2"100%
2009-05-270.39°100°Jupiter41.1"99%Neptune2.3"100%
2011-03-270.15°36°Venus13.6"79%Neptune2.2"100%
2013-02-040.41°16°Mars4.1"99%Neptune2.2"100%
2013-02-070.41°14°Mercury5.6"85%Neptune2.2"100%
2015-01-200.21°36°Mars4.6"95%Neptune2.2"100%
2016-03-200.49°20°Venus10.6"94%Neptune2.2"100%
2017-01-010.02°59°Mars5.7"90%Neptune2.2"100%
2017-01-120.36°47°Venus24.5"51%Neptune2.2"100%
2018-02-250.43°Mercury5.1"97%Neptune2.2"100%
2018-12-070.03°88°Mars8.8"86%Neptune2.3"100%
2019-04-020.38°25°Mercury9.1"32%Neptune2.2"100%
2019-04-100.29°33°Venus12.6"83%Neptune2.2"100%
2020-01-270.07°40°Venus15"75%Neptune2.2"100%
2021-03-140.37°Venus9.7"100%Neptune2.2"100%
2022-04-120.10°29°Jupiter33.8"100%Neptune2.2"100%
2022-04-270.01°43°Venus17.1"66%Neptune2.2"100%
2023-02-150.02°28°Venus11.6"89%Neptune2.2"100%
2023-03-160.38°Mercury5"100%Neptune2.2"100%
2024-03-080.44°Mercury5.3"95%Neptune2.2"100%
2024-04-030.26°16°Venus10.2"96%Neptune2.2"100%
2024-04-290.04°40°Mars4.7"94%Neptune2.2"100%
2027-04-110.21°17°Mercury5.4"85%Neptune2.2"100%
2027-04-240.24°29°Venus11.7"87%Neptune2.2"100%
2029-03-270.35°Mercury5"100%Neptune2.2"100%
2030-05-120.30°40°Venus15.1"73%Neptune2.2"100%
2033-05-250.24°46°Venus25"47%Neptune2.2"100%
2034-04-160.23°Mercury5.1"97%Neptune2.2"100%
2035-05-080.03°25°Venus11.1"91%Neptune2.2"100%
2038-05-270.30°37°Venus13.7"78%Neptune2.2"100%
2039-05-050.35°13°Mercury5.3"89%Neptune2.2"100%
2039-06-230.39°59°Mars5.8"89%Neptune2.3"100%
2043-05-220.29°21°Venus10.6"93%Neptune2.2"100%
2044-05-230.49°20°Mercury6"73%Neptune2.2"100%
2046-06-110.11°33°Venus12.6"83%Neptune2.2"100%
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