Asteroids

5370 Taranis help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.205

Aphelion (Q)

5.432

Eccentricity (e)

0.637

Inclination (i)

19.2

deg

Orbit period (P)

2207.8

Earth MOID

0.21189

U parameter

0.5

Next Earth close approach

Date

2099-09-10

Nominal distance (from Earth center)

0.13255

19828472

Maximum Brightness

12.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

15.2

mag

Diameter

5820

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1986-09-02

Observatory

Palomar Mountain

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

3.318237

1-sigma variation

5.134E-8

Unit

Eccentricity (e)

Value

0.637005

1-sigma variation

9.817E-8

Unit

Inclination (i)

Value

19.1717

1-sigma variation

1.304E-5

Unit

Long. of Ascending Node (Ω)

Value

177.7785

1-sigma variation

2.378E-5

Unit

Arg. of Perihelion (ω)

Value

161.2805

1-sigma variation

3.456E-5

Unit

Mean Anomaly (M)

Value

156.06765

1-sigma variation

0.00005

Unit

Perihelion distance

Value

1.204504

1-sigma variation

Unit

Aphelion distance

Value

5.431970

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

3.973986

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.225203

1-sigma variation

Unit

MOID

Value

0.211892

1-sigma variation

Unit

Orbit Period

Value

2207.7989

1-sigma variation

Unit

U parameter

Value

0.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.63589E-15	-2.08060E-15	1.24989E-13	3.44850E-14	1.22623E-12	-2.67046E-12
e	-2.08060E-15	9.63788E-15	-6.32077E-14	7.66035E-14	-4.70238E-13	2.47180E-12
i	1.24989E-13	-6.32077E-14	1.70087E-10	1.93556E-10	-1.38910E-10	-9.76114E-11
Ω	3.44850E-14	7.66035E-14	1.93556E-10	5.65712E-10	-5.46485E-10	2.68814E-11
ω	1.22623E-12	-4.70238E-13	-1.38910E-10	-5.46485E-10	1.19408E-9	-1.27490E-9
M	-2.67046E-12	2.47180E-12	-9.76114E-11	2.68814E-11	-1.27490E-9	2.74826E-9

Date of computation: 2025-09-10 00:30 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

Unit

Source

[-]

Quality

Value

Unit

Source

[5]

Amplitude

Value

0.02

Unit

mag

Source

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[1]

Taxonomy (all)

Value

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

15.233

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.051

Unit

Source

[4]

Diameter

Value

5820

Unit

Source

[3]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	EARN	1.) Ieva, S. et al. (2018) Astron. Astrophys. 615, A127. (Photometric survey of 67 near-Earth objects)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 3.) Mommert, M. et al. (2015) Astron. J. 150, 106(9pp). (ExploreNEOs VIII: Dormant Short-Period Comets in the Near-Earth Asteroid Population) (23 NEOs) 4.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[4]	EARN	1.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012. 2.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 3.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 4.) Mommert, M. et al. (2015) Astron. J. 150, 106(9pp). (ExploreNEOs VIII: Dormant Short-Period Comets in the Near-Earth Asteroid Population) (23 NEOs)
[5]	EARN	1.) Wisniewski, W.Z. (1987) Icarus 70, 566-572. (Photometry of six radar target asteroids)1986 DA, 3199, 3103, and 1983 RD. 1986 JK and 1986 RA

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

14070

Unit

Source

[1]

Unobserved

Value

227

Unit

Source

[1]

Normalized RMS of residuals

Value

0.634133

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1986-08-11.30486

Unit

Source

[2]

Last Observation

Value

2025-02-17.311344

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

362 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 5370 Taranis from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	2099-09-10 06:08	< 1 min	0.1325451	0.1325291	0.0000053

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
4.67882273	247.95889582	0.21313937	MINIMUM
358.05386577	54.48580184	2.19197066	SADDLE
179.31892122	57.36002210	4.44829403	SADDLE
180.18697998	237.74742294	6.43646112	MAXIMUM

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MOID Plots

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