Asteroids

2017TT5 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.080

Aphelion (Q)

2.447

Eccentricity (e)

0.388

Inclination (i)

36.0

deg

Orbit period (P)

855.5

Earth MOID

0.09653

U parameter

9.0

Next Earth close approach

Date

2099-10-11

Nominal distance (from Earth center)

0.10585

15835069

Maximum Brightness

21.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-10-14

Observatory

Mt. Lemmon Survey

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

1.763660

1-sigma variation

0.022507

Unit

Eccentricity (e)

Value

0.387506

1-sigma variation

0.007290

Unit

Inclination (i)

Value

36.0264

1-sigma variation

0.2639

Unit

Long. of Ascending Node (Ω)

Value

17.9488

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

18.6323

1-sigma variation

0.2089

Unit

Mean Anomaly (M)

Value

243.29044

1-sigma variation

25.90320

Unit

Perihelion distance

Value

1.080232

1-sigma variation

Unit

Aphelion distance

Value

2.447088

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.097420

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.367580

1-sigma variation

Unit

MOID

Value

0.096535

1-sigma variation

Unit

Orbit Period

Value

855.5014

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.06567E-4	1.64087E-4	5.94010E-3	1.95235E-5	-4.68899E-3	-5.83004E-1
e	1.64087E-4	5.31511E-5	1.92409E-3	6.32161E-6	-1.51866E-3	-1.88847E-1
i	5.94010E-3	1.92409E-3	6.96585E-2	2.29303E-4	-5.50135E-2	-6.83641E0
Ω	1.95235E-5	6.32161E-6	2.29303E-4	7.91065E-7	-1.83805E-4	-2.24682E-2
ω	-4.68899E-3	-1.51866E-3	-5.50135E-2	-1.83805E-4	4.36566E-2	5.39642E0
M	-5.83004E-1	-1.88847E-1	-6.83641E0	-2.24682E-2	5.39642E0	6.70976E2

Date of computation: 2026-03-17 23:26 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

[-]

Amplitude

Value

Unit

mag

Source

[-]

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

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

24.945

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

27 - 60*

Unit

Source

[2]

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

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

3138

Unit

Source

[1]

Normalized RMS of residuals

Value

0.887492

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-10-14.27721

Unit

Source

[2]

Last Observation

Value

2017-10-16.34876

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (0)

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

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
348.33230765	278.47199566	0.09661685	MINIMUM
193.34668354	119.12871214	1.48300281	SADDLE
9.71147708	125.34006318	2.07230294	SADDLE
175.62843006	289.09562473	3.43101296	MAXIMUM

Download:

MOID Plots

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