Asteroids

523809 2007TV18 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.807

Aphelion (Q)

1.670

Eccentricity (e)

0.348

Inclination (i)

0.9

deg

Orbit period (P)

503.6

Earth MOID

0.00156

U parameter

0.0

Next Earth close approach

Date

2047-08-18

Nominal distance (from Earth center)

0.15991

23922043

Maximum Brightness

26.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.8

mag

Diameter

50 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2007-10-09

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.238691

1-sigma variation

1.402E-9

Unit

Eccentricity (e)

Value

0.348371

1-sigma variation

1.148E-8

Unit

Inclination (i)

Value

0.9319

1-sigma variation

4.985E-6

Unit

Long. of Ascending Node (Ω)

Value

353.1781

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

289.3686

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

109.59363

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.807167

1-sigma variation

Unit

Aphelion distance

Value

1.670215

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.030355

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.235374

1-sigma variation

Unit

MOID

Value

0.001564

1-sigma variation

Unit

Orbit Period

Value

503.5502

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.96586E-18	1.31028E-17	-2.12742E-15	-3.37308E-14	3.69281E-14	-8.07295E-15
e	1.31028E-17	1.31899E-16	-2.70896E-14	-4.73967E-13	5.07310E-13	-6.28964E-14
i	-2.12742E-15	-2.70896E-14	2.48484E-11	7.32217E-10	-7.37266E-10	1.18956E-11
Ω	-3.37308E-14	-4.73967E-13	7.32217E-10	2.45617E-8	-2.46418E-8	1.98043E-10
ω	3.69281E-14	5.07310E-13	-7.37266E-10	-2.46418E-8	2.47486E-8	-2.25947E-10
M	-8.07295E-15	-6.28964E-14	1.18956E-11	1.98043E-10	-2.25947E-10	4.51533E-11

Date of computation: 2025-09-10 00:30 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

23.818

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

50 - 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

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

6381

Unit

Source

[1]

Unobserved

Value

220

Unit

Source

[1]

Normalized RMS of residuals

Value

0.629804

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2007-10-09.20375

Unit

Source

[2]

Last Observation

Value

2025-03-29.282984

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

117 (2)

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 523809 2007TV18 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	1955-04-12 05:21	< 1 s	0.0647129	0.0647127	0.0000001
EARTH	1959-09-16 09:59	< 1 min	0.0594978	0.0594974	0.0000001
EARTH	1966-04-09 04:49	< 1 s	0.1113093	0.1113088	0.0000002
EARTH	1970-08-26 03:09	< 1 min	0.1439402	0.1439399	0.0000001
MARS	1983-08-24 13:17	< 1 min	0.0440985	0.0440982	0.0000001
EARTH	2003-05-04 20:12	< 1 min	0.1214380	0.1214377	0.0000001
EARTH	2007-09-26 22:59	< 1 s	0.0660741	0.0660739	0.0000001
EARTH	2014-04-18 00:01	< 1 s	0.0189942	0.0189941	0.0000000
EARTH	2018-09-25 12:03	< 1 s	0.0524816	0.0524814	0.0000000
EARTH	2025-05-11 08:46	< 1 min	0.1383304	0.1383301	0.0000001
MARS	2034-02-26 19:51	< 1 min	0.0365749	0.0365746	0.0000001
EARTH	2047-08-18 18:56	< 1 min	0.1599090	0.1599087	0.0000001
EARTH	2054-04-13 15:00	< 1 min	0.0528811	0.0528801	0.0000003
EARTH	2058-09-22 10:48	< 1 min	0.0023577	0.0023575	0.0000001
MARS	2060-10-30 14:11	< 1 min	0.0384569	0.0384558	0.0000004
EARTH	2065-10-01 07:43	1.2	0.1474540	0.1474009	0.0000177
EARTH	2075-04-12 21:35	2.6	0.1270183	0.1269136	0.0000349
EARTH	2082-04-22 07:01	4.7	0.0193018	0.0192011	0.0000336
EARTH	2089-06-20 13:19	96.3	0.1962048	0.1961241	0.0000269
EARTH	2096-08-20 18:19	178.5	0.1517920	0.1511962	0.0001986
EARTH	2103-09-29 21:48	35.9	0.0955030	0.0941100	0.0004643
EARTH	2113-04-21 10:14	36.1	0.0080755	0.0076421	0.0001608
EARTH	2120-04-28 22:28	1400.7	0.0706075	0.0503844	0.0067546

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
56.97977264	257.20661290	0.00150031	MINIMUM
302.93011583	103.35402030	0.00899290	MINIMUM
359.92504389	180.23259068	0.20967333	SADDLE
179.97351123	0.31419997	0.68698485	SADDLE
359.97646972	0.30791533	1.79069125	SADDLE
179.99603981	180.32960614	2.68657594	MAXIMUM

Download:

MOID Plots

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