Asteroids

2018DT1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.604

Aphelion (Q)

2.119

Eccentricity (e)

0.557

Inclination (i)

30.5

deg

Orbit period (P)

580.2

Earth MOID

0.05799

U parameter

6.8

Next Earth close approach

Date

2045-02-24

Nominal distance (from Earth center)

0.09562

14304780

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.1

mag

Diameter

160 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-02-24

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

1.361446

1-sigma variation

0.000150

Unit

Eccentricity (e)

Value

0.556644

1-sigma variation

0.000059

Unit

Inclination (i)

Value

30.5152

1-sigma variation

0.0040

Unit

Long. of Ascending Node (Ω)

Value

342.9764

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

76.0900

1-sigma variation

0.0023

Unit

Mean Anomaly (M)

Value

351.56059

1-sigma variation

0.30607

Unit

Perihelion distance

Value

0.603606

1-sigma variation

Unit

Aphelion distance

Value

2.119287

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.180136

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.092361

1-sigma variation

Unit

MOID

Value

0.057989

1-sigma variation

Unit

Orbit Period

Value

580.2287

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.24272E-8	8.81018E-9	6.01925E-7	8.58571E-8	3.41403E-7	-4.58367E-5
e	8.81018E-9	3.46255E-9	2.36657E-7	3.37704E-8	1.33854E-7	-1.80063E-5
i	6.01925E-7	2.36657E-7	1.61899E-5	2.31175E-6	9.12673E-6	-1.23021E-3
Ω	8.58571E-8	3.37704E-8	2.31175E-6	3.30378E-7	1.29908E-6	-1.75474E-4
ω	3.41403E-7	1.33854E-7	9.12673E-6	1.29908E-6	5.24146E-6	-6.97765E-4
M	-4.58367E-5	-1.80063E-5	-1.23021E-3	-1.75474E-4	-6.97765E-4	9.36813E-2

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

21.057

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

160 - 400*

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

2730

Unit

Source

[1]

Normalized RMS of residuals

Value

0.525616

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-02-24.51571

Unit

Source

[2]

Last Observation

Value

2018-04-06.0245

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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 2018DT1 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	1956-03-02 21:22	> 1 d	0.1225501	0.0610035	0.0294791
EARTH	1960-08-30 15:39	> 1 d	0.1473426	0.1373130	0.0124794
EARTH	1983-03-05 15:39	> 1 d	0.1662228	0.0862861	0.0287290
EARTH	1987-09-03 22:06	> 1 d	0.1716722	0.1411392	0.0162587
EARTH	1991-02-22 00:50	872.5	0.1960163	0.1239695	0.0247439
EARTH	2018-02-23 06:46	< 1 min	0.1439857	0.1439359	0.0000166
EARTH	2045-02-24 17:41	1259.0	0.0956215	0.0573728	0.0213703
EARTH	2049-08-19 15:11	> 1 d	0.1777007	0.1393748	0.0191560
EARTH	2072-02-26 14:28	> 1 d	0.0719069	0.0562627	0.0291719
EARTH	2076-08-20 21:32	> 1 d	0.1618990	0.1356965	0.0297491
EARTH	2099-02-25 22:58	> 1 d	0.0795875	0.0551675	0.0634851
EARTH	2103-08-21 10:28	> 1 d	0.1731236	0.1357911	0.0570499

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
63.87419492	55.64065982	0.05840422	MINIMUM
306.28804712	232.13728534	0.13402365	MINIMUM
5.10783367	326.65898858	0.55583322	SADDLE
183.83077240	136.68180999	1.33772069	SADDLE
1.47478383	139.04373408	1.56491404	SADDLE
177.34244673	312.72312058	3.01972666	MAXIMUM

Download:

MOID Plots

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