Asteroids

2025DD help

Last update: 2025-02-22 05:33 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.566

Aphelion (Q)

1.489

Eccentricity (e)

0.449

Inclination (i)

14.2

deg

Orbit period (P)

380.5

Earth MOID

0.01809

U parameter

7.9

Next Earth close approach

Date

2043-07-21

Nominal distance (from Earth center)

0.18291

27363200

Maximum Brightness

24.4

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

23.9

mag

Diameter

40 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-16

Observatory

Mt. Lemmon 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.027544

1-sigma variation

0.000510

Unit

Eccentricity (e)

Value

0.448988

1-sigma variation

0.000731

Unit

Inclination (i)

Value

14.2222

1-sigma variation

0.0280

Unit

Long. of Ascending Node (Ω)

Value

144.3290

1-sigma variation

0.0047

Unit

Arg. of Perihelion (ω)

Value

252.5149

1-sigma variation

0.0018

Unit

Mean Anomaly (M)

Value

133.55274

1-sigma variation

0.14777

Unit

Perihelion distance

Value

0.566189

1-sigma variation

Unit

Aphelion distance

Value

1.488899

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.039510

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.289025

1-sigma variation

Unit

MOID

Value

0.018094

1-sigma variation

Unit

Orbit Period

Value

380.4515

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.60152E-7	3.72830E-7	1.42855E-5	2.37293E-6	9.44637E-8	-7.53688E-5
e	3.72830E-7	5.34923E-7	2.04907E-5	3.40188E-6	9.07813E-8	-1.08041E-4
i	1.42855E-5	2.04907E-5	7.84991E-4	1.30348E-4	3.87577E-6	-4.13947E-3
Ω	2.37293E-6	3.40188E-6	1.30348E-4	2.16516E-5	7.70067E-7	-6.87516E-4
ω	9.44637E-8	9.07813E-8	3.87577E-6	7.70067E-7	3.29179E-6	-2.53259E-5
M	-7.53688E-5	-1.08041E-4	-4.13947E-3	-6.87516E-4	-2.53259E-5	2.18364E-2

Date of computation: 2025-02-21 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

23.922

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

40 - 100*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.532258

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-16.518114

Unit

Source

[2]

Last Observation

Value

2025-02-20.08862

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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 2025DD 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	1950-02-12 22:02	> 1 d	0.1464481	0.0162122	0.5628259
EARTH	1951-02-21 02:51	> 1 w	0.1072158	0.0172103	0.5346638
VENUS	1960-04-07 22:49	> 1 w	0.0443873	0.0372947	0.1287367
EARTH	1968-07-07 23:32	> 1 d	0.1693945	0.1482122	0.0123923
EARTH	1976-02-18 15:14	> 1 w	0.0388743	0.0169947	0.2140537
EARTH	1993-07-12 05:09	> 1 w	0.1547562	0.1544603	0.0118743
EARTH	2000-02-13 20:23	> 1 d	0.1226916	0.0178815	0.1987310
EARTH	2001-02-22 02:47	> 1 w	0.1393061	0.0183853	0.1880175
VENUS	2011-04-29 16:18	> 1 d	0.0368916	0.0361596	0.0130880
EARTH	2018-07-18 22:05	> 1 d	0.1711121	0.1566357	0.0107875
EARTH	2025-02-15 12:30	< 1 min	0.0398100	0.0395893	0.0000736
EARTH	2043-07-21 10:46	> 1 w	0.1829117	0.1574451	0.0422540
EARTH	2050-02-15 21:52	> 1 d	0.0393067	0.0185994	0.0938282
EARTH	2068-07-13 10:29	124.8	0.1542926	0.1517001	0.0009020
EARTH	2075-02-13 08:25	146.4	0.1612555	0.0382893	0.0417394
EARTH	2076-02-21 06:21	> 1 d	0.0936695	0.0200159	0.0467425
EARTH	2093-07-06 20:11	> 1 d	0.1820268	0.1546140	0.0557291
EARTH	2101-02-17 11:28	> 1 d	0.0256572	0.0195864	0.0845734
EARTH	2119-07-12 01:15	> 1 w	0.1574931	0.1531608	0.0626364
VENUS	2119-08-10 17:11	> 1 w	0.0484874	0.0365492	0.2084357

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
84.10955431	45.11037213	0.01809393	MINIMUM
280.04659707	188.25511670	0.15420232	MINIMUM
1.23825035	297.65150919	0.46215175	SADDLE
182.66108400	115.18979124	0.56279957	SADDLE
358.34286253	112.91576755	1.56260033	SADDLE
177.95565906	292.20764181	2.46581587	MAXIMUM

Download:

MOID Plots

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