Asteroids

2025DE1 help

Last update: 2025-02-23 14:31 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.796

Aphelion (Q)

2.188

Eccentricity (e)

0.467

Inclination (i)

0.8

deg

Orbit period (P)

665.8

Earth MOID

0.00026

U parameter

7.1

Next Earth close approach

Date

2035-12-02

Nominal distance (from Earth center)

0.18346

27445177

Maximum Brightness

35.2

mag

Risk

Object is in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-20

Observatory

ATLAS-MLO, Mauna Loa

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.492175

1-sigma variation

0.000432

Unit

Eccentricity (e)

Value

0.466566

1-sigma variation

0.000193

Unit

Inclination (i)

Value

0.8028

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

332.0782

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

111.8468

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

65.41280

1-sigma variation

0.03125

Unit

Perihelion distance

Value

0.795976

1-sigma variation

Unit

Aphelion distance

Value

2.188373

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.399662

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.006645

1-sigma variation

Unit

MOID

Value

0.000262

1-sigma variation

Unit

Orbit Period

Value

665.7757

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.86720E-7	8.35366E-8	1.29355E-7	5.42738E-8	-3.10199E-7	-1.35032E-5
e	8.35366E-8	3.73778E-8	5.79016E-8	2.42957E-8	-1.39850E-7	-6.04100E-6
i	1.29355E-7	5.79016E-8	9.14036E-8	3.85293E-8	-2.22957E-7	-9.35327E-6
Ω	5.42738E-8	2.42957E-8	3.85293E-8	1.66361E-8	-9.44438E-8	-3.92429E-6
ω	-3.10199E-7	-1.39850E-7	-2.22957E-7	-9.44438E-8	7.77539E-7	2.23812E-5
M	-1.35032E-5	-6.04100E-6	-9.35327E-6	-3.92429E-6	2.23812E-5	9.76540E-4

Date of computation: 2025-02-22 11:58 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

24.973

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

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

[-]

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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

0.4

Unit

Source

[1]

Normalized RMS of residuals

Value

0.32498

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-20.344393

Unit

Source

[2]

Last Observation

Value

2025-02-23.21799

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

71 (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 2025DE1 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	1950-09-29 13:08	> 1 mo	0.1422767	0.0091064	2.2221518
EARTH	1962-01-31 18:39	> 1 mo	0.1140202	0.0008127	1.5225719
EARTH	1974-12-01 18:54	> 1 mo	0.1790860	0.0195907	0.2051581
EARTH	1987-10-10 19:44	> 1 d	0.0104606	0.0094577	0.0134200
EARTH	1999-03-04 05:07	449.9	0.1763764	0.1582720	0.0060348
EARTH	2000-10-05 08:39	130.2	0.0537546	0.0471232	0.0022153
EARTH	2012-02-25 02:46	> 1 d	0.0565572	0.0002206	0.0287321
EARTH	2013-09-28 06:27	> 1 d	0.1701097	0.0950153	0.0250614
EARTH	2025-02-19 13:15	< 1 s	0.0038478	0.0038437	0.0000014
EARTH	2035-12-04 20:17	> 1 w	0.1850149	0.1741663	0.0036187
EARTH	2046-10-01 21:40	> 1 d	0.0915658	0.0095392	0.0474805
EARTH	2056-02-10 13:50	> 1 d	0.0811510	0.0006189	0.0354694
EARTH	2066-10-27 23:50	> 1 d	0.1165568	0.1007259	0.0052797
EARTH	2076-03-01 23:40	> 1 d	0.1390598	0.0674818	0.0238595
MARS	2076-05-26 14:05	840.5	0.0368096	0.0364228	0.0025674
EARTH	2086-12-29 03:25	> 1 w	0.1824717	0.1533020	0.0097357
EARTH	2097-10-08 13:50	> 1 d	0.0114470	0.0098284	0.0381161
EARTH	2107-01-17 11:35	> 1 mo	0.1580498	0.0102062	0.4780331
EARTH	2117-09-29 00:15	> 1 mo	0.1608279	0.0097391	1.6359612

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
43.72886688	48.26817820	0.00026219	MINIMUM
315.09184679	273.77466090	0.00955611	MINIMUM
359.24163890	340.81682231	0.18889796	SADDLE
179.73108260	161.39320236	1.17339400	SADDLE
359.25354817	160.84787922	1.81134687	SADDLE
179.74784858	341.40763756	3.17309709	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025DE1

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2067-02-20.640	76066.640	2.585	0.72 ± 0.000	4.30E3	8.32E-6	1.66E-5	-4.94
2074-02-20.514	78623.514	3.909	0.72 ± 0.000	1.49E6	3.06E-10	6.11E-10	-9.44
2078-02-20.382	80084.382	2.467	0.59 ± 0.001	3.42E4	1.39E-6	2.78E-6	-5.82
2078-02-20.568	80084.568	4.293	1.15 ± 0.000	1.56E4	3.99E-9	7.97E-9	-8.36
2079-02-20.934	80449.934	3.918	0.58 ± 0.000	5.08E6	9.26E-11	1.85E-10	-10.00
2080-02-21.134	80815.134	4.015	0.15 ± 0.000	4.62E5	7.47E-10	1.49E-9	-9.10
2086-02-20.480	83006.480	2.587	0.76 ± 0.007	1.38E8	2.47E-10	4.92E-10	-9.63
2087-02-20.769	83371.769	3.689	1.29 ± 0.000	4.30E4	2.50E-8	4.98E-8	-7.63
2088-02-21.112	83737.112	3.927	0.96 ± 0.000	2.87E7	1.60E-11	3.20E-11	-10.83
2090-02-20.653	84467.653	3.898	0.18 ± 0.000	1.95E6	2.82E-10	5.64E-10	-9.60
2095-02-20.945	86293.945	3.998	0.48 ± 0.000	1.66E6	2.13E-10	4.25E-10	-9.75
2098-02-20.699	87389.699	4.305	1.27 ± 0.000	1.43E6	2.91E-11	5.80E-11	-10.64
2100-02-21.230	88120.230	3.957	1.35 ± 0.000	7.65E6	1.32E-11	2.63E-11	-10.99


Based on 59 optical observations (of which 0 are rejected as outliers) from 2025/02/20.344 to 2025/02/22.357.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.38 and 1.38 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250222 144450.855 UTC.

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