Asteroids

2009DM45 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.742

Aphelion (Q)

1.603

Eccentricity (e)

0.367

Inclination (i)

26.7

deg

Orbit period (P)

463.6

Earth MOID

0.00826

U parameter

0.0

Next Earth close approach

Date

2031-08-29

Nominal distance (from Earth center)

0.03386

5064944

Maximum Brightness

16.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.3

mag

Diameter

140 - 300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2009-02-25

Observatory

Taunus Observatory, Frankfurt

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

1.172260

1-sigma variation

2.644E-9

Unit

Eccentricity (e)

Value

0.367339

1-sigma variation

1.121E-7

Unit

Inclination (i)

Value

26.6931

1-sigma variation

3.672E-5

Unit

Long. of Ascending Node (Ω)

Value

336.3169

1-sigma variation

6.792E-6

Unit

Arg. of Perihelion (ω)

Value

90.9030

1-sigma variation

1.740E-5

Unit

Mean Anomaly (M)

Value

319.56387

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.741643

1-sigma variation

Unit

Aphelion distance

Value

1.602876

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010569

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.018058

1-sigma variation

Unit

MOID

Value

0.008256

1-sigma variation

Unit

Orbit Period

Value

463.5901

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.98899E-18	-1.23306E-16	-1.93793E-14	-4.99547E-15	1.49784E-14	-3.79264E-14
e	-1.23306E-16	1.25583E-14	9.30909E-13	1.18226E-13	-1.53232E-12	4.50831E-13
i	-1.93793E-14	9.30909E-13	1.34828E-9	8.74462E-11	-3.09934E-10	2.04431E-10
Ω	-4.99547E-15	1.18226E-13	8.74462E-11	4.61267E-11	-1.31063E-11	-4.11632E-12
ω	1.49784E-14	-1.53232E-12	-3.09934E-10	-1.31063E-11	3.02831E-10	-1.46771E-10
M	-3.79264E-14	4.50831E-13	2.04431E-10	-4.11632E-12	-1.46771E-10	3.07229E-10

Date of computation: 2025-07-29 02:36 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

21.338

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

140 - 300*

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

5111

Unit

Source

[1]

Unobserved

Value

921

Unit

Source

[1]

Normalized RMS of residuals

Value

0.419802

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2009-02-25.20777

Unit

Source

[2]

Last Observation

Value

2023-02-23.23732

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

88 (3)

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 2009DM45 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	1962-02-20 08:15	< 1 min	0.1047244	0.1047106	0.0000046
EARTH	1970-09-05 15:46	< 1 s	0.1604875	0.1604865	0.0000004
EARTH	1984-08-31 10:46	< 1 min	0.0375139	0.0374918	0.0000074
EARTH	1998-08-30 02:00	< 1 min	0.0113744	0.0113725	0.0000006
EARTH	2009-02-24 01:22	< 1 s	0.0147673	0.0147671	0.0000001
EARTH	2017-09-06 18:09	< 1 min	0.1985022	0.1985008	0.0000005
EARTH	2031-08-29 12:18	< 1 min	0.0338571	0.0338554	0.0000005
EARTH	2042-02-22 05:50	< 1 min	0.0593325	0.0593296	0.0000010
EARTH	2050-09-02 00:19	< 1 min	0.0600737	0.0600709	0.0000009
EARTH	2061-02-25 12:05	< 1 min	0.0373893	0.0373858	0.0000011
EARTH	2083-08-30 08:43	< 1 min	0.0185482	0.0185405	0.0000026
EARTH	2094-02-21 02:06	< 1 min	0.0953850	0.0953643	0.0000069
EARTH	2102-08-31 11:37	< 1 min	0.0121112	0.0120888	0.0000075
EARTH	2118-03-02 12:24	4.9	0.1165905	0.1163378	0.0000842

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
291.31963446	235.42828709	0.00825559	MINIMUM
66.58153562	52.34743308	0.01415717	MINIMUM
358.78296722	323.91338206	0.46483371	SADDLE
179.14630345	144.05634924	0.83301203	SADDLE
358.33699407	143.21549856	1.70853511	SADDLE
179.13735823	324.05971504	2.52355986	MAXIMUM

Download:

MOID Plots

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