Asteroids

2017TG2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.598

Aphelion (Q)

2.682

Eccentricity (e)

0.635

Inclination (i)

4.1

deg

Orbit period (P)

767.4

Earth MOID

0.04436

U parameter

2.3

Next Earth close approach

Date

2038-10-25

Nominal distance (from Earth center)

0.08451

12642905

Maximum Brightness

19.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.6

mag

Diameter

130 - 280*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-10-09

Observatory

Catalina Sky 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.640405

1-sigma variation

2.970E-7

Unit

Eccentricity (e)

Value

0.635168

1-sigma variation

0.000001

Unit

Inclination (i)

Value

4.0698

1-sigma variation

2.381E-5

Unit

Long. of Ascending Node (Ω)

Value

249.0634

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

229.0660

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

282.70750

1-sigma variation

0.00037

Unit

Perihelion distance

Value

0.598472

1-sigma variation

Unit

Aphelion distance

Value

2.682339

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.661768

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.295274

1-sigma variation

Unit

MOID

Value

0.044364

1-sigma variation

Unit

Orbit Period

Value

767.4058

1-sigma variation

Unit

U parameter

Value

2.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.82093E-14	2.24398E-13	4.22016E-12	-5.05284E-11	8.53827E-11	-1.10114E-10
e	2.24398E-13	5.75006E-13	1.08391E-11	-1.31012E-10	2.20292E-10	-2.80032E-10
i	4.22016E-12	1.08391E-11	5.66765E-10	-8.43061E-9	1.00734E-8	-5.25570E-9
Ω	-5.05284E-11	-1.31012E-10	-8.43061E-9	1.37033E-7	-1.55980E-7	6.25516E-8
ω	8.53827E-11	2.20292E-10	1.00734E-8	-1.55980E-7	1.88868E-7	-1.06080E-7
M	-1.10114E-10	-2.80032E-10	-5.25570E-9	6.25516E-8	-1.06080E-7	1.37474E-7

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

[-]

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

21.637

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

130 - 280*

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

1695

Unit

Source

[1]

Unobserved

Value

1260

Unit

Source

[1]

Normalized RMS of residuals

Value

0.545184

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-09-28.37918

Unit

Source

[2]

Last Observation

Value

2022-05-20.31901

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

180 (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

Close Approaches for 2017TG2 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
88 Thisbe	1954-04-11 18:42	< 1 min	0.0103063	0.0103015	0.0000016
EARTH	1961-04-25 03:14	1.1	0.0974407	0.0973897	0.0000170
EARTH	1982-04-30 17:53	2.4	0.1945118	0.1943968	0.0000383
EARTH	1996-10-11 07:30	2.2	0.1666265	0.1665387	0.0000293
EARTH	2017-10-19 12:45	< 1 s	0.0509043	0.0509040	0.0000001
EARTH	2022-04-09 05:32	< 1 min	0.1716085	0.1716003	0.0000027
EARTH	2038-10-25 11:29	3.2	0.0845126	0.0844296	0.0000277
EARTH	2043-04-17 04:25	3.3	0.0838497	0.0837689	0.0000269
EARTH	2059-11-05 16:17	5.0	0.1903726	0.1902846	0.0000293
EARTH	2064-04-23 18:44	2.2	0.0659002	0.0658490	0.0000171
VENUS	2091-06-15 17:35	2.5	0.0476748	0.0476066	0.0000227
EARTH	2099-10-17 22:11	< 1 min	0.0838559	0.0838303	0.0000085
EARTH	2120-10-19 13:53	1.7	0.0647115	0.0646659	0.0000152
7 Iris	2123-10-27 05:22	< 1 min	0.0063145	0.0063048	0.0000033

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
52.60396798	107.66156185	0.04444957	MINIMUM
308.61087908	285.81660922	0.04746969	MINIMUM
1.00575372	17.48048114	0.38793384	SADDLE
0.66611428	196.76560147	1.61372676	SADDLE
180.22438642	196.01775705	1.66912191	SADDLE
180.06799987	15.94038668	3.66567080	MAXIMUM

Download:

MOID Plots

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