Asteroids

2021TL14

Last update: 2021-11-30 01:34 UTC

Orbital Properties

Epoch

59600.0

MJD

Orbit type

Apollo

Perihelion (q)

0.999

Aphelion (Q)

1.411

Eccentricity (e)

0.171

Inclination (i)

deg

Orbit period (P)

483.3

days

Earth MOID

0.00413

Next Earth close approach

Date

2025-09-18

Nominal distance (from Earth center)

0.18488

27658165

Maximum Brightness

126.2

Orbit Visualiser

Click the button to start Orbit Visualiser

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

Diameter

14*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-14

Observatory

ATLAS-MLO, Mauna Loa

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

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

Value

1-sigma variation

Unit

Epoch

Value

59600.0

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.21

1-sigma variation

3.5866E-5

Unit

Eccentricity (e)

Value

0.170769177671378

1-sigma variation

2.42814E-5

Unit

Inclination (i)

Value

10.03

1-sigma variation

1.073E-3

Unit

Ascending Node (Ω)

Value

20.96

1-sigma variation

3.919E-5

Unit

Arg. of Perihelion (ω)

Value

7.18

1-sigma variation

1.002E-3

Unit

Mean Anomaly (M)

Value

68.5

1-sigma variation

2.347E-3

Unit

Perihelion

Value

9.994E-1

1-sigma variation

Unit

Aphelion

Value

1.41

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

4.131E-3

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

4.072E-1

1-sigma variation

Unit

MOID

Value

4.126E-3

1-sigma variation

Unit

Orbit Period

Value

483.29

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.28637E-9	8.70876E-10	3.84588E-8	1.40474E-9	-3.53920E-8	-8.40585E-8
e	8.70876E-10	5.89585E-10	2.60369E-8	9.50992E-10	-2.39544E-8	-5.69119E-8
i	3.84588E-8	2.60369E-8	1.15082E-6	4.20221E-8	-1.05597E-6	-2.51461E-6
Ω	1.40474E-9	9.50992E-10	4.20221E-8	1.53587E-9	-3.87153E-8	-9.17476E-8
ω	-3.53920E-8	-2.39544E-8	-1.05597E-6	-3.87153E-8	1.00423E-6	2.29154E-6
M	-8.40585E-8	-5.69119E-8	-2.51461E-6	-9.17476E-8	2.29154E-6	5.50753E-6

Date of computation: 2021-11-10 06:02 UTC

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

26.953

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

14*

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

[-]

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Sources

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

**Estimated value

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

days

Source

[1]

Unobserved

Value

Unit

days

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.653092

Unit

arcseconds

Source

[1]

First Observation

Value

2021-10-14.411818

Unit

Source

[2]

Last Observation

Value

2021-10-16.837675

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

110 (1)

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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

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

Sources

No.	Name	Additional
[1]	ESA ODIM	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

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 2021TL14 from 1950 to 2121

Body	Date	MJD	Nominal distance (au)	Min possible distance (au)	Stretching (au)	Width (au)	Close approach probability
EARTH	1958-10-15.17018	36491.2	0.0035824	0.0032363	2.688E-3	1.195E-8	1.00E0
EARTH	1962-10-27.78577	37964.8	0.0894437	0.0733961	4.910E-3	8.618E-8	1.00E0
EARTH	2013-09-15.27429	56550.3	0.1960197	0.1910153	1.702E-3	1.304E-7	9.03E-1
EARTH	2017-10-01.47838	58027.5	0.0820492	0.0789350	1.028E-3	6.540E-8	1.00E0
EARTH	2021-10-14.29633	59501.3	0.0032014	0.0032003	3.601E-7	2.996E-9	1.00E0
EARTH	2025-09-18.73281	60936.7	0.1848834	0.1816376	1.101E-3	1.128E-7	1.00E0
EARTH	2058-11-03.77732	73035.8	0.1416973	0.1146968	8.309E-3	1.127E-7	1.00E0
EARTH	2062-10-09.22798	74471.2	0.0358724	0.0027050	7.361E-3	4.012E-8	1.00E0
EARTH	2091-10-28.41483	85082.4	0.0925441	0.0034868	9.469E-2	6.433E-8	6.90E-1
EARTH	2095-09-26.21731	86511.2	0.1303101	0.0035472	7.586E-2	8.473E-8	6.55E-1

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