Asteroids

2007TH71 help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.921

Aphelion (Q)

1.760

Eccentricity (e)

0.313

Inclination (i)

7.1

deg

Orbit period (P)

567.0

Earth MOID

0.01101

U parameter

7.5

Next Earth close approach

Date

2039-01-31

Nominal distance (from Earth center)

0.15807

23646323

Maximum Brightness

25.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2007-10-13

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.340613

1-sigma variation

0.000139

Unit

Eccentricity (e)

Value

0.312989

1-sigma variation

0.000190

Unit

Inclination (i)

Value

7.0657

1-sigma variation

0.0140

Unit

Long. of Ascending Node (Ω)

Value

19.9477

1-sigma variation

0.0116

Unit

Arg. of Perihelion (ω)

Value

53.0267

1-sigma variation

0.0819

Unit

Mean Anomaly (M)

Value

80.53917

1-sigma variation

3.77660

Unit

Perihelion distance

Value

0.921015

1-sigma variation

Unit

Aphelion distance

Value

1.760210

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.020208

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.487766

1-sigma variation

Unit

MOID

Value

0.011014

1-sigma variation

Unit

Orbit Period

Value

566.9613

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.94048E-8	-2.64376E-8	-1.95379E-6	1.62037E-6	-1.14135E-5	5.26084E-4
e	-2.64376E-8	3.60200E-8	2.66196E-6	-2.20763E-6	1.55504E-5	-7.16751E-4
i	-1.95379E-6	2.66196E-6	1.96805E-4	-1.63153E-4	1.14925E-3	-5.29695E-2
Ω	1.62037E-6	-2.20763E-6	-1.63153E-4	1.35307E-4	-9.53072E-4	4.39299E-2
ω	-1.14135E-5	1.55504E-5	1.14925E-3	-9.53072E-4	6.71333E-3	-3.09432E-1
M	5.26084E-4	-7.16751E-4	-5.29695E-2	4.39299E-2	-3.09432E-1	1.42627E1

Date of computation: 2025-04-09 07:59 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

26.781

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

12 - 26*

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

6441

Unit

Source

[1]

Normalized RMS of residuals

Value

0.583708

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2007-10-13.19383

Unit

Source

[2]

Last Observation

Value

2007-10-16.7685

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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 2007TH71 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	1959-10-10 05:03	> 1 w	0.0701218	0.0065303	0.1771836
EARTH	1976-11-19 23:58	> 1 mo	0.1035077	0.0515338	0.0999420
EARTH	1994-01-30 05:11	> 1 d	0.1564448	0.1228166	0.0657895
EARTH	2007-10-18 21:15	< 1 min	0.0121634	0.0120944	0.0000230
EARTH	2021-10-07 22:15	> 1 w	0.0970085	0.0061914	0.1014318
EARTH	2039-01-31 06:45	> 1 d	0.1580659	0.1205910	0.0571191
EARTH	2052-12-31 12:25	> 1 w	0.1231139	0.1228697	0.0020173
EARTH	2066-11-04 01:15	> 1 d	0.0737854	0.0312938	0.0142061
EARTH	2080-10-20 03:07	> 1 d	0.0204722	0.0116623	0.0240134
EARTH	2094-12-20 02:20	> 1 w	0.1220058	0.1208227	0.0038545
EARTH	2109-02-03 01:09	> 1 w	0.1779116	0.1205240	0.1032369
EARTH	2119-10-08 04:54	> 1 w	0.1193772	0.0065306	0.1794945

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
323.68358614	282.83605188	0.01101385	MINIMUM
32.54749280	14.51006598	0.12066232	MINIMUM
16.13688205	352.92997856	0.12347243	SADDLE
180.92371000	150.93887348	0.75762978	SADDLE
359.09984246	149.80647577	1.93282352	SADDLE
178.72696365	329.34132639	2.74298854	MAXIMUM

Download:

MOID Plots

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