Tag: orbit

42 Why do artificial satellites need orbit correction, but natural ones don't? 2015-03-08T18:10:27.827

33 Is this really Rosetta's orbit around 67P? 2014-08-06T12:58:52.993

32 The Loose Astronaut 2016-11-29T15:17:59.553

30 Why doesn't ISS pass over the polar regions? 2014-09-10T06:57:45.183

30 This orbit looks wrong near a Lagrange point. Is it? 2017-05-18T12:14:40.050

29 Why are the GPS constellation satellites in such a high orbit? 2015-08-30T06:14:09.363

29 How many times do you have to circle the Earth to break orbit? 2018-01-17T18:25:07.020

27 Requirements to orbit Pluto 2015-07-11T01:06:09.130

26 Do any (LEO) satellites move east-to-west? 2013-07-29T08:04:41.233

25 Starting a liquid fuel engine in zero gravity 2013-10-17T13:40:50.133

25 Has in-space refueling been done? 2015-07-22T15:48:19.763

25 How is the altitude of a satellite defined, given that the Earth is not spherical? 2017-11-28T09:55:54.177

24 Can a satellite orbit Earth so that it always has the Moon in line of sight? 2014-10-20T17:58:14.840

24 What does the Sun-Earth-Moon system look like from the Sun-Earth L-2 point? 2015-07-29T15:09:22.993

23 Is there any stable orbit around a black hole? 2013-09-12T08:04:39.553

21 Is the "airship to orbit" mission profile feasible? 2014-12-23T01:42:17.433

20 Why aren't the 'bedrooms' aboard the ISS also the escape pods? 2017-05-08T06:28:54.853

19 Any possible setbacks in deorbiting larger space junk and let it burn up upon reentry into atmosphere? 2013-08-02T03:46:16.647

19 How closely spaced are satellites at GEO? 2013-10-24T02:23:05.747

18 How full is the geostationary belt? 2013-08-08T18:22:05.123

18 What are these orientations called in orbit? 2014-02-07T13:03:43.013

18 Does the Moon have any captured objects orbiting it? 2015-07-28T16:08:31.373

17 Determining orbital position at a future point in time 2015-04-26T07:54:45.197

16 Are Lagrange points stable over a long period of time? 2013-07-17T09:54:47.837

15 What is the South Atlantic Anomaly, and what can I do to protect satellites from it? 2013-07-16T21:06:54.537

15 Why can't we launch from space? 2015-05-27T03:55:22.120

15 Could twin planets exist and share the same orbit? 2015-10-02T19:13:19.513

15 Scott Kelly age vs Twin's 2016-03-02T17:14:18.033

15 Will Juno record its deorbit? 2016-06-14T20:14:40.913

14 How does orbital eccentricity affect positions of Lagrange points $L_4$ and $L_5$? 2013-11-23T04:46:58.450

14 Can humans live in something like the ISS around gas giants? 2014-05-12T20:10:24.917

13 Are sun-synchronous orbits possible around any body? 2013-08-01T11:36:20.067

13 What range of orbital elements was available for the Space Shuttle? 2013-08-13T17:25:03.917

13 How accurately (maximum possible accuracy) can future satellite positions be predicted? 2015-01-29T23:00:29.233

13 Through what process does MESSENGER undergo orbital decay? 2015-03-22T20:15:12.077

13 What is a "Sailboat Island of Stability"? 2015-06-03T01:19:29.433

13 Halo vs Lissajous orbit: Which station-keeping strategy to select and when? 2015-07-26T17:44:34.147

13 What is the frame of reference for orbital speed? 2017-04-27T07:42:24.007

13 Does SpaceX put Falcon 9 2nd stages carrying geostationary satellites into a temporary sub-orbital trajectory before the second burn? 2017-07-06T16:16:38.077

12 Why did the recent Sirius FM6 launch use such a high inclination? 2013-10-25T18:40:05.850

12 How long does it take for a satellite to reach GEO? 2013-11-25T22:19:04.433

12 Has a solar sail been used on an orbital mission? 2014-01-12T23:09:22.147

12 Does NASA have spacecraft that are specifically made for orbiting around the Sun? 2014-04-24T23:19:37.873

12 How do spacecraft rendezvous in orbit? 2014-07-13T12:17:11.807

12 Can an artificial satellite stay in orbit forever? 2014-10-10T23:11:30.273

11 Are Molniya orbits used apart from Russian communication satellites? 2013-07-31T23:29:33.233

11 Are there any remaining spacecraft that can retrieve objects from Earth orbit? 2013-12-10T09:05:51.280

11 Amateur satellite launch 2015-08-21T06:25:36.200

11 What did they expect to happen with Laika? 2016-02-19T20:46:31.360

11 Sparking/arcing distance between two spacecraft? 2016-02-22T11:24:01.660

10 Is it possible for moons to have their own moons? 2013-11-26T11:48:36.547

10 Would a satellite in retrograde orbit have a different speed than it would in prograde? 2014-03-31T15:38:10.563

10 How is space assigned for satellites that follow intersecting orbits? 2014-06-27T01:59:14.377

10 How accurate are modern ephemerides, and how does their accuracy degrade over time? 2014-10-30T18:19:27.900

10 How do apsides of celestial bodies get their names? 2014-12-31T04:29:09.747

10 What are the unique design considerations for space bound nuclear reactors (TOPAZ, SNAP 10-A), and their respective dangers? 2015-07-28T14:19:14.493

10 What caused the ISS's sudden loss of altitude in January 2015? 2015-11-09T21:34:10.810

9 Why is the life span of a LEO satellite less than that of a GEO satellite? 2013-08-13T14:43:29.417

9 What are the chances of getting struck by lightning while in Earth orbit? 2013-09-14T00:10:37.323

9 What kind of liquid propulsion systems do GEO satellites use? 2013-10-24T12:10:43.013

9 What is a planet intercept? 2013-11-02T08:02:31.857

9 Does ISS follow Earth's rotation? 2014-03-24T11:12:55.517

9 Calculating Which Satellite Passes are Visible 2014-04-23T04:04:30.890

9 Theoretical: How might we land on a planet/moon that has an orbit going in the reverse direction of Earth? 2014-04-28T17:53:00.697

9 Why is MOM in a very retrograde orbit? 2014-10-05T10:06:16.617

9 AOCS for very small satellites (micro, nano, pico, femto) 2014-10-22T16:49:30.877

9 ISS: time between two successive observations and orbital period 2014-12-20T07:32:28.183

9 How would changes in the Earth's magnetic field affect space exploration? 2015-03-01T13:48:39.700

9 How long did it take for the Apollo Command Module to orbit the moon? 2015-03-29T09:30:31.167

9 Is "medihelion" a word? 2015-04-16T20:02:15.903

9 By what methods can cubesats move from LEO to higher orbits? 2015-07-08T04:37:03.483

9 How much "wobble" does a typical geostationary satellite experience? 2015-09-03T00:08:57.333

9 What will happen to the Russian messages flash drive? 2016-02-04T13:13:26.970

9 Why do so few satellites pass over the poles, and why do so many focus on the equator? 2016-07-09T16:39:29.740

9 The strange orbit of Ofeq 11 - how does it (actually) do this? 2016-09-20T12:32:20.100

9 Why was Kepler's orbit chosen to continue to drift away from Earth? 2016-10-10T13:23:17.660

9 Can an asteroid enter Earth orbit? 2017-10-02T12:07:16.737

8 What creative orbital maneuvers might I do to save fuel for a geosynchronous spacecraft? 2013-07-16T21:02:28.733

8 Where can I find orbital parameters for historical satellites and other spacecraft? 2013-08-01T14:21:50.390

8 How to calculate libration amplitude of objects orbiting the $L_4$, $L_5$? 2013-11-23T14:21:52.217

8 What is the flight plan to get Gaia in orbit around the Sun–Earth $L_2$ Lagrangian point? 2013-11-26T13:23:05.777

8 Visualization of non-Keplerian orbits for solar sails 2014-05-05T11:08:50.947

8 Is a lunar Sun-synchronous orbit possible at the "frozen" inclination of 86°? 2014-09-17T20:57:23.127

8 Who/What is the international authority to assign/refuse orbit to a satellite/space-craft? 2014-11-15T05:08:26.897

8 What are the challenges and utility of a Lunar Orbital Station? 2014-12-13T13:34:30.613

8 When will 3 outer planets line up for a flyby mission next time? 2015-04-02T11:05:03.033

8 Can you get to orbital speed with an air breathing engine? 2016-12-10T11:52:35.873

8 Are transfers between two orbits commutative? 2017-01-14T06:16:39.767

8 What is the highest non-equatorial earth orbit used? 2017-10-07T09:59:09.673

8 How can debris from an impact escape to a stable orbit? 2018-01-19T19:49:15.757

7 Does the delta v requirement of a rocket to place a satellite in orbit depend on the position of other planets? 2013-08-14T15:00:25.983

7 2D Orbital Path from State Vectors 2013-10-27T17:18:43.957

7 How to calculate apoapsis of sub-orbital trajectory? 2014-06-07T10:23:39.220

7 What plane will DSCOVR’s orbit be in? 2014-12-24T20:28:36.273

7 Why is Dawn in a much higher observation orbit than Rosetta? 2015-07-18T09:38:58.473

7 Could a communication satellite that fails to reach GEO be repurposed? 2015-08-20T07:38:21.967

7 Are sun synchronous orbits possible for any place on Earth? 2015-11-18T11:19:45.187

7 How is the launch window decided for GTO launches? 2016-05-05T18:14:13.280

7 Where is Luna 1? 2016-05-30T15:29:39.667