Asteroids

2021TY14 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.990

Aphelion (Q)

4.511

Eccentricity (e)

0.640

Inclination (i)

2.3

deg

Orbit period (P)

1666.2

Earth MOID

0.00091

U parameter

7.0

Next Earth close approach

Date

2103-11-23

Nominal distance (from Earth center)

0.05673

8486368

Maximum Brightness

22.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

9 - 21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-14

Observatory

GINOP-KHK, Piszkesteto

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

2.750574

1-sigma variation

0.001247

Unit

Eccentricity (e)

Value

0.640057

1-sigma variation

0.000161

Unit

Inclination (i)

Value

2.3393

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

204.9370

1-sigma variation

0.0023

Unit

Arg. of Perihelion (ω)

Value

192.0292

1-sigma variation

0.0029

Unit

Mean Anomaly (M)

Value

3.97915

1-sigma variation

0.24463

Unit

Perihelion distance

Value

0.990051

1-sigma variation

Unit

Aphelion distance

Value

4.511098

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

3.340738

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001660

1-sigma variation

Unit

MOID

Value

0.000913

1-sigma variation

Unit

Orbit Period

Value

1666.2246

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.55407E-6	2.00541E-7	4.03559E-7	2.85168E-6	-3.64103E-6	-3.04957E-4
e	2.00541E-7	2.58783E-8	5.20765E-8	3.67987E-7	-4.69843E-7	-3.93523E-5
i	4.03559E-7	5.20765E-8	1.05059E-7	7.40139E-7	-9.44582E-7	-7.91908E-5
Ω	2.85168E-6	3.67987E-7	7.40139E-7	5.23334E-6	-6.68253E-6	-5.59588E-4
ω	-3.64103E-6	-4.69843E-7	-9.44582E-7	-6.68253E-6	8.53715E-6	7.14481E-4
M	-3.04957E-4	-3.93523E-5	-7.91908E-5	-5.59588E-4	7.14481E-4	5.98420E-2

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

27.245

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

9 - 21*

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

1637

Unit

Source

[1]

Normalized RMS of residuals

Value

0.548523

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-10-10.14616

Unit

Source

[2]

Last Observation

Value

2021-10-16.049916

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

107 (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.

Close Approaches for 2021TY14 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1979-11-04 04:45	> 1 mo	0.0580930	0.0160310	0.0590201
EARTH	2021-10-15 21:14	< 1 s	0.0052365	0.0052331	0.0000011
EARTH	2103-11-23 03:47	> 1 mo	0.0567279	0.0153707	0.1449083
EARTH	2126-09-22 12:13	> 1 mo	0.1030898	0.0108944	0.4693502

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
354.98930056	285.94009959	0.00113257	MINIMUM
358.90625085	114.23965771	1.99805658	SADDLE
179.76657061	115.34338126	3.50373801	SADDLE
179.75933247	295.34293461	5.50513161	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out