Asteroids

2007DX40 help

Last update: 2026-07-30 11:21 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.710

Aphelion (Q)

2.361

Eccentricity (e)

0.538

Inclination (i)

0.4

deg

Orbit period (P)

694.8

Earth MOID

0.00016

U parameter

9.0

Next Earth close approach

Date

2045-03-23

Nominal distance (from Earth center)

0.16592

24821885

Maximum Brightness

24.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

24.7

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2007-02-21

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.535251

1-sigma variation

0.002212

Unit

Eccentricity (e)

Value

0.537563

1-sigma variation

0.001355

Unit

Inclination (i)

Value

0.4424

1-sigma variation

0.0059

Unit

Long. of Ascending Node (Ω)

Value

326.5036

1-sigma variation

4.5774

Unit

Arg. of Perihelion (ω)

Value

277.1645

1-sigma variation

4.5172

Unit

Mean Anomaly (M)

Value

20.93533

1-sigma variation

18.09840

Unit

Perihelion distance

Value

0.709957

1-sigma variation

Unit

Aphelion distance

Value

2.360545

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010379

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.182653

1-sigma variation

Unit

MOID

Value

0.000158

1-sigma variation

Unit

Orbit Period

Value

694.8122

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.89343E-6	2.99781E-6	1.29721E-5	-1.01256E-2	9.99257E-3	-4.00356E-2
e	2.99781E-6	1.83653E-6	7.94697E-6	-6.20315E-3	6.12165E-3	-2.45266E-2
i	1.29721E-5	7.94697E-6	3.43903E-5	-2.68422E-2	2.64895E-2	-1.06131E-1
Ω	-1.01256E-2	-6.20315E-3	-2.68422E-2	2.09522E1	-2.06769E1	8.28426E1
ω	9.99257E-3	6.12165E-3	2.64895E-2	-2.06769E1	2.04052E1	-8.17541E1
M	-4.00356E-2	-2.45266E-2	-1.06131E-1	8.28426E1	-8.17541E1	3.27551E2

Date of computation: 2026-07-30 11:21 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

24.714

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

30 - 70*

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

7105

Unit

Source

[1]

Normalized RMS of residuals

Value

0.582585

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2007-02-21.38963

Unit

Source

[2]

Last Observation

Value

2007-03-02.085188

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2007DX40 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1984-08-10 05:40	> 1 mo	0.0900691	0.0007404	1.1136658
EARTH	2003-08-19 08:24	> 1 d	0.0150283	0.0007160	0.0783526
MARS	2003-10-02 02:17	> 1 d	0.0410890	0.0406246	0.0101676
EARTH	2007-03-04 04:26	< 1 min	0.0198656	0.0197345	0.0000437
VENUS	2012-12-28 02:12	> 1 w	0.0290022	0.0265609	0.0334771
EARTH	2026-03-13 06:58	> 1 mo	0.0977749	0.0021257	0.5874125
VENUS	2033-11-29 14:28	> 1 mo	0.0271473	0.0254663	0.1554371
EARTH	2045-03-23 07:43	> 1 mo	0.1659241	0.0018107	1.7941311
EARTH	2064-03-23 00:31	> 1 mo	0.1653050	0.0007505	0.8397777
VENUS	2077-09-03 20:16	> 1 mo	0.0307573	0.0038114	1.8978029
EARTH	2083-03-30 15:47	> 1 mo	0.1930025	0.0019643	1.0208179
EARTH	2100-08-13 06:22	> 1 mo	0.0830615	0.0007965	8.4651388
MARS	2113-06-11 22:35	> 1 w	0.0467091	0.0438113	0.2159871
EARTH	2119-08-20 18:38	> 1 mo	0.0022803	0.0007065	2.3942013
MARS	2124-09-20 23:20	> 1 mo	0.0464865	0.0435613	158.2768765

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
50.71155442	221.55393578	0.00015830	MINIMUM
311.19570799	59.24162739	0.00238475	MINIMUM
1.34639930	140.86237026	0.30301603	SADDLE
180.40441416	319.74743916	1.37315349	SADDLE
1.31524641	320.82687890	1.69728538	SADDLE
180.41547694	139.76008999	3.37332021	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2007DX40

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2030-08-18.709	62731.709	4.754	0.000	0.26 ± 0.005	1.28E4	9.29E-10	4.20E0	-7.80
2035-08-18.830	64557.830	-3.386	0.000	0.47 ± 0.004	6.83E4	4.31E-8	3.78E0	-6.43
2036-03-05.795	64757.795	0.875	0.000	0.20 ± 0.046	1.64E7	4.03E-8	4.04E0	-6.44
2037-08-18.755	65288.755	-2.232	0.000	0.40 ± 0.005	1.23E5	6.61E-7	3.84E0	-5.30
2048-08-18.324	69306.324	0.243	0.000	0.49 ± 0.003	5.29E7	1.71E-8	3.96E0	-7.15
2049-08-19.192	69672.192	3.381	0.000	1.21 ± 0.005	2.87E5	2.11E-9	4.11E0	-8.07
2052-03-01.853	70597.853	-1.077	0.053	1.24 ± 4.084	2.41E6	4.05E-8	3.78E0	-6.85
2052-08-18.226	70767.226	-0.911	0.000	0.63 ± 0.011	3.44E7	1.62E-8	3.90E0	-7.25
2052-08-18.330	70767.330	0.240	0.000	1.00 ± 0.005	1.67E7	3.38E-8	3.96E0	-6.92
2054-08-18.784	71497.784	0.239	0.000	0.96 ± 0.005	9.84E6	6.10E-8	3.97E0	-6.69
2054-08-18.787	71497.787	0.185	0.000	1.16 ± 0.005	1.94E7	1.62E-8	3.95E0	-7.27
2054-08-18.795	71497.795	-0.922	0.000	0.99 ± 0.004	5.92E6	6.52E-8	3.90E0	-6.67
2054-08-18.889	71497.889	-3.085	0.000	0.71 ± 0.004	1.32E5	5.25E-8	3.79E0	-6.77
2056-08-18.202	72228.202	-2.103	0.000	0.72 ± 0.005	5.15E3	2.09E-5	3.85E0	-4.19
2056-08-18.220	72228.220	-2.068	0.000	0.58 ± 0.004	3.91E3	2.66E-5	3.83E0	-4.09
2056-08-18.305	72228.305	0.235	0.000	0.83 ± 0.005	5.04E6	1.40E-7	3.95E0	-6.36
2056-08-18.307	72228.307	0.187	0.000	1.02 ± 0.005	9.51E6	5.63E-8	3.96E0	-6.75
2058-08-18.644	72958.644	-2.107	0.000	0.06 ± 0.005	4.83E6	2.21E-8	3.85E0	-7.20
2058-08-18.784	72958.784	0.229	0.000	1.23 ± 0.005	1.97E6	3.23E-7	3.96E0	-6.03
2058-08-18.788	72958.788	0.190	0.000	1.08 ± 0.005	3.35E6	1.41E-7	3.94E0	-6.39
2058-08-19.031	72959.031	0.750	0.000	0.34 ± 0.013	1.91E7	3.78E-8	3.97E0	-6.96
2058-08-19.629	72959.629	-1.624	0.000	0.31 ± 0.000	7.99E7	3.27E-9	3.88E0	-8.03
2060-03-06.831	73524.831	-3.908	0.000	1.20 ± 0.114	7.71E6	1.44E-11	3.81E0	-10.40
2060-08-18.357	73689.357	-2.847	0.000	0.47 ± 0.005	3.14E6	5.04E-9	3.81E0	-7.87
2062-08-18.866	74419.866	0.664	0.000	0.49 ± 0.004	4.78E5	1.51E-6	3.99E0	-5.40
2062-08-18.877	74419.877	0.639	0.000	0.20 ± 0.012	8.62E4	9.28E-6	3.99E0	-4.61
2063-08-18.380	74784.380	4.367	0.000	0.09 ± 0.004	1.81E6	3.90E-11	4.18E0	-9.98
2065-08-18.552	75515.552	-3.348	0.000	1.02 ± 0.015	4.30E6	7.63E-10	3.79E0	-8.75
2065-08-18.605	75515.605	-2.075	0.000	1.09 ± 0.004	6.67E6	7.98E-9	3.85E0	-7.72
2065-08-18.670	75515.670	-0.905	0.000	1.01 ± 0.004	2.40E7	1.54E-8	3.91E0	-7.43
2067-08-19.032	76246.032	-2.091	0.000	1.06 ± 0.006	1.76E6	3.68E-8	3.83E0	-7.09
2067-08-19.038	76246.038	-2.082	0.000	1.19 ± 0.004	1.62E6	5.07E-8	3.85E0	-6.95
2067-08-19.190	76246.190	0.237	0.000	0.56 ± 0.005	1.40E7	6.07E-8	3.97E0	-6.86
2067-08-19.197	76246.197	-0.911	0.000	0.77 ± 0.004	3.16E7	1.61E-8	3.90E0	-7.44
2067-08-19.216	76246.216	-4.217	0.000	0.69 ± 0.005	1.63E6	6.94E-11	3.75E0	-9.82
2069-08-18.338	76976.338	0.796	0.000	0.03 ± 0.127	2.34E7	3.05E-8	3.97E0	-7.18
2069-08-18.588	76976.588	-0.922	0.000	1.18 ± 0.005	1.93E7	2.33E-8	3.89E0	-7.30
2070-08-19.083	77342.083	0.992	0.000	1.19 ± 0.005	1.08E5	5.43E-6	4.00E0	-4.93
2072-08-18.262	78072.262	-0.193	0.000	1.16 ± 0.006	1.35E8	2.37E-9	3.95E0	-8.31
2073-08-18.457	78437.457	-1.406	0.543	1.24 ± 0.122	2.11E7	1.60E-9	3.76E0	-8.51
2074-08-19.149	78803.149	3.308	0.000	0.93 ± 0.006	2.24E5	1.79E-8	4.11E0	-7.44
2075-03-04.438	79000.438	-1.173	2.063	0.96 ± 1.097	1.41E7	2.47E-11	3.77E0	-10.33
2075-08-19.849	79168.849	-0.260	0.000	1.10 ± 0.005	1.81E7	2.57E-8	3.93E0	-7.30
2076-08-18.296	79533.296	3.741	0.000	0.71 ± 0.005	3.51E5	2.08E-9	4.14E0	-8.39
2076-08-18.355	79533.355	2.487	0.000	0.01 ± 0.000	2.71E7	1.64E-9	4.07E0	-8.49
2076-08-18.391	79533.391	3.726	0.000	0.44 ± 0.005	1.30E5	7.12E-9	4.14E0	-7.85
2077-08-19.127	79899.127	-0.426	3.011	1.23 ± 0.006	2.32E5	2.47E-10	3.81E0	-9.35
2078-08-19.494	80264.494	4.321	0.000	0.25 ± 0.005	8.63E4	9.81E-10	4.18E0	-8.72
2081-08-18.644	81359.644	-0.887	0.000	1.18 ± 0.019	1.66E8	1.12E-9	3.90E0	-8.71
2081-08-18.930	81359.930	0.184	0.000	1.15 ± 0.003	2.61E8	1.36E-9	3.96E0	-8.62
2083-08-18.870	82089.870	-1.286	0.000	0.92 ± 0.003	5.93E6	5.01E-8	3.91E0	-7.08
2083-08-19.479	82090.479	-0.734	0.000	1.20 ± 0.008	8.14E6	2.18E-8	3.92E0	-7.44
2084-08-18.620	82455.620	0.183	0.000	0.69 ± 0.000	1.17E9	6.79E-10	3.96E0	-8.95
2085-08-17.878	82819.878	-0.434	0.000	1.08 ± 0.011	2.53E7	1.68E-8	3.94E0	-7.56
2087-08-19.212	83551.212	0.673	0.000	0.37 ± 0.003	8.19E5	9.13E-7	3.99E0	-5.84
2088-08-18.206	83916.206	3.867	0.000	0.56 ± 0.003	4.17E7	1.18E-11	4.17E0	-10.72
2088-08-18.487	83916.487	-0.450	0.000	0.50 ± 0.078	3.62E6	2.24E-7	3.91E0	-6.46
2088-08-18.573	83916.573	0.795	0.000	0.56 ± 0.064	2.26E7	2.89E-8	3.98E0	-7.34
2088-08-18.804	83916.804	-2.410	0.000	0.01 ± 0.092	3.25E6	1.65E-8	3.84E0	-7.60
2089-08-18.806	84281.806	0.128	0.000	0.79 ± 0.023	5.07E7	1.62E-8	3.96E0	-7.60
2089-08-19.166	84282.166	0.122	0.000	1.18 ± 0.005	7.87E6	3.41E-8	3.96E0	-7.28
2090-08-18.981	84646.981	0.787	0.000	0.79 ± 0.043	1.41E7	3.91E-8	3.96E0	-7.22
2090-08-19.219	84647.219	-3.189	0.000	0.55 ± 0.004	6.34E5	8.60E-9	3.80E0	-7.90
2091-08-19.275	85012.275	1.644	0.000	0.87 ± 0.039	2.28E6	9.91E-8	4.03E0	-6.82
2092-08-19.081	85378.081	-0.260	0.000	0.84 ± 0.032	1.51E8	4.61E-9	3.93E0	-8.17
2093-03-04.746	85575.746	1.648	3.390	1.23 ± 1.383	2.03E6	2.53E-10	3.90E0	-9.43
2093-08-18.629	85742.629	-1.072	0.000	0.44 ± 0.145	9.82E6	5.23E-8	3.86E0	-7.13
2095-08-19.754	86473.754	2.146	0.000	0.89 ± 0.005	4.49E6	1.51E-8	4.05E0	-7.66
2097-08-19.476	87204.476	0.897	0.000	0.74 ± 0.008	1.48E7	3.58E-8	3.99E0	-7.30
2098-08-19.173	87569.173	-1.446	0.000	0.96 ± 0.004	3.86E6	5.62E-8	3.88E0	-7.12
2101-08-20.240	88665.240	2.533	0.000	0.61 ± 0.005	6.79E4	5.07E-7	4.08E0	-6.17
2103-08-20.694	89395.694	-4.007	0.000	0.14 ± 0.005	6.49E5	4.93E-10	3.75E0	-9.22
2104-08-19.621	89760.621	-0.735	0.000	0.63 ± 0.005	1.91E7	3.58E-8	3.91E0	-7.35
2104-08-19.764	89760.764	1.776	0.000	1.19 ± 0.003	2.49E7	2.54E-9	4.06E0	-8.49
2104-08-19.940	89760.940	1.682	0.000	1.21 ± 0.000	2.02E8	1.94E-10	4.03E0	-9.60
2105-08-20.132	90126.132	-4.127	0.000	1.12 ± 0.003	5.23E6	1.80E-11	3.77E0	-10.66
2106-08-20.386	90491.386	1.781	0.000	0.58 ± 0.008	9.23E5	1.92E-7	4.04E0	-6.62
2107-08-20.579	90856.579	1.739	0.000	1.14 ± 0.005	5.81E6	1.43E-8	4.04E0	-7.75
2107-08-20.909	90856.909	-2.408	0.000	0.64 ± 0.003	1.79E6	2.78E-8	3.85E0	-7.48
2109-08-20.291	91587.291	1.743	0.000	0.53 ± 0.007	1.47E6	1.32E-7	4.03E0	-6.80
2111-08-20.879	92317.879	-2.817	0.000	1.17 ± 0.005	8.62E6	7.28E-10	3.80E0	-9.08
2112-08-19.678	92682.678	0.463	0.000	0.51 ± 0.015	1.33E8	6.10E-9	3.98E0	-8.15
2113-08-20.025	93048.025	3.567	0.000	0.72 ± 0.022	3.99E7	3.45E-11	4.14E0	-10.39
2114-08-19.685	93412.685	0.676	0.000	0.89 ± 0.003	6.37E7	8.49E-9	3.99E0	-8.02
2115-08-20.921	93778.921	4.105	0.000	0.10 ± 0.003	6.30E5	3.39E-10	4.19E0	-9.40
2115-08-20.936	93778.936	-0.392	0.000	0.45 ± 0.018	1.53E8	5.89E-9	3.94E0	-8.18
2118-08-20.398	94874.398	1.021	0.000	0.53 ± 0.006	5.90E7	9.02E-9	4.01E0	-8.01
2118-08-20.418	94874.418	1.023	0.000	0.34 ± 0.004	1.32E7	4.23E-8	4.02E0	-7.33
2119-08-21.125	95240.125	-1.634	0.000	0.15 ± 0.003	2.12E6	1.21E-7	3.88E0	-6.89
2119-08-21.215	95240.215	-1.626	0.000	1.15 ± 0.003	3.92E6	2.34E-8	3.89E0	-7.61


Based on 30 optical observations (of which 0 are rejected as outliers) from 2007/02/21.390 to 2007/03/02.085.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.23 and 1.23 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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