Asteroids

1036 Ganymed help

Last update: 2026-07-02 12:46 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.243

Aphelion (Q)

4.085

Eccentricity (e)

0.534

Inclination (i)

26.7

deg

Orbit period (P)

1588.2

Earth MOID

0.34196

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

9.4

mag

Diameter

30000 - 80000*

Taxonomic type

Rotation period (T)

10.32

Discovery Information

Discovery Date

1924-10-23

Observatory

Hamburg-Bergedorf

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.664069

1-sigma variation

1.331E-9

Unit

Eccentricity (e)

Value

0.533501

1-sigma variation

1.442E-8

Unit

Inclination (i)

Value

26.6877

1-sigma variation

2.271E-6

Unit

Long. of Ascending Node (Ω)

Value

215.3977

1-sigma variation

4.552E-6

Unit

Arg. of Perihelion (ω)

Value

132.5073

1-sigma variation

4.741E-6

Unit

Mean Anomaly (M)

Value

142.96531

1-sigma variation

1.105E-6

Unit

Perihelion distance

Value

1.242786

1-sigma variation

Unit

Aphelion distance

Value

4.085351

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.973903

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.406939

1-sigma variation

Unit

MOID

Value

0.341955

1-sigma variation

Unit

Orbit Period

Value

1588.2417

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.77115E-18	-3.82002E-18	3.91918E-16	1.10485E-16	-4.49956E-17	-6.76322E-16
e	-3.82002E-18	2.07894E-16	-6.40988E-15	-3.63211E-15	1.53036E-15	1.05050E-15
i	3.91918E-16	-6.40988E-15	5.15629E-12	-1.40181E-12	1.37839E-12	-1.22940E-13
Ω	1.10485E-16	-3.63211E-15	-1.40181E-12	2.07194E-11	-1.84058E-11	-1.45089E-13
ω	-4.49956E-17	1.53036E-15	1.37839E-12	-1.84058E-11	2.24742E-11	-1.84638E-12
M	-6.76322E-16	1.05050E-15	-1.22940E-13	-1.45089E-13	-1.84638E-12	1.22051E-12

Date of computation: 2026-07-02 12:46 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

10.32

10.31

Unit

Source

[1]

[2]

Quality

Value

Unit

Source

[-]

Amplitude

Value

0.09

0.11

Unit

mag

Source

[2]

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

205

Unit

Source

[1]

Spinvector B

Value

-1

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[3]

[4]

[5]

Taxonomy (all)

Value

Unit

Source

[6]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

9.414

Unit

mag

Source

[7]

Slope Parameter (G)

Value

0.3**

Unit

Source

[7]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[8]

Diameter

Value

30000 - 80000*

Unit

Source

[8]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

2.5832
0.4661
1.9591
0.2187
0.6243
2.3369
-0.077
2.1263
0.1471
0.5454
0.3799
2.4872
2.0585
1.5269
1.9068

Unit

u-i

u-v

u-g

r-i

g-i

u-r

i-z

v-i

r-z

g-z

g-r

u-z

v-z

v-g

v-r

Source

[3]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2019 March-July, B.D. Warner
[2]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 3. Skiff, Brian A et al.
[3]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[4]	EARN	1.) N. G. Simion et al, Spectral properties of near-Earth objects with low-Jovian Tisserand invariant (2021)
[5]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[6]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[7]	ESA Aegis	ESA orbit determination and impact monitoring system
[8]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

37140

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.471464

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1924-10-23.8094

Unit

Source

[2]

Last Observation

Value

2026-06-30.981827

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

13310 (11)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

1985-10-05

Unit

Source

[3]

Last Observation

Value

1985-10-05

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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Final Date: *

Normalised Only accepted

Max residual (arcsec):

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Computation parameters

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Final Date: *

Output option:

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
16.55857019	275.60179354	0.34195532	MINIMUM
354.80629765	57.80124575	2.19876017	SADDLE
176.65734217	64.63937763	3.16750897	SADDLE
181.60100219	247.37488728	5.04681673	MAXIMUM

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MOID Plots

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