Asteroids

144900 2004VG64 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.333

Aphelion (Q)

1.603

Eccentricity (e)

0.656

Inclination (i)

36.2

deg

Orbit period (P)

348.1

Earth MOID

0.02763

U parameter

0.2

Next Earth close approach

Date

2025-10-23

Nominal distance (from Earth center)

0.08546

12784013

Maximum Brightness

16.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.2

mag

Diameter

600 - 1300*

Taxonomic type

Scomp

Rotation period (T)

Discovery Information

Discovery Date

2004-11-13

Observatory

Catalina Sky 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

0.968426

1-sigma variation

1.823E-9

Unit

Eccentricity (e)

Value

0.655688

1-sigma variation

1.331E-7

Unit

Inclination (i)

Value

36.2467

1-sigma variation

1.901E-5

Unit

Long. of Ascending Node (Ω)

Value

208.8410

1-sigma variation

2.958E-6

Unit

Arg. of Perihelion (ω)

Value

43.9562

1-sigma variation

9.584E-6

Unit

Mean Anomaly (M)

Value

83.40127

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.333441

1-sigma variation

Unit

Aphelion distance

Value

1.603411

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.630753

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.050298

1-sigma variation

Unit

MOID

Value

0.027632

1-sigma variation

Unit

Orbit Period

Value

348.0952

1-sigma variation

Unit

U parameter

Value

0.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.32256E-18	-6.63536E-17	-4.22800E-16	2.19704E-16	4.40632E-15	-4.86035E-14
e	-6.63536E-17	1.77260E-14	2.43941E-13	-4.65853E-15	-1.19450E-12	-1.00319E-13
i	-4.22800E-16	2.43941E-13	3.61294E-10	-1.90590E-11	-1.00593E-11	5.54161E-12
Ω	2.19704E-16	-4.65853E-15	-1.90590E-11	8.74758E-12	-9.32942E-12	2.99568E-12
ω	4.40632E-15	-1.19450E-12	-1.00593E-11	-9.32942E-12	9.18534E-11	-4.12069E-13
M	-4.86035E-14	-1.00319E-13	5.54161E-12	2.99568E-12	-4.12069E-13	7.87946E-10

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

Scomp

Unit

Source

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.236

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

600 - 1300*

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Radar R

Unit

Source

[5]

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[2]	EARN	1.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects) 2.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude
[5]	EARN	1.) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.) 2.) Binzel, R.P. et al. href="http://smass.mit.edu/minus.html"> Webpage
[6]	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

7325

Unit

Source

[1]

Unobserved

Value

287

Unit

Source

[1]

Normalized RMS of residuals

Value

0.459025

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2004-11-13.11435

Unit

Source

[2]

Last Observation

Value

2024-12-03.100311

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

368 (1)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2005-10-20

Unit

Source

[3]

Last Observation

Value

2005-10-21

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 144900 2004VG64 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	1965-10-21 02:07	< 1 min	0.0410536	0.0410512	0.0000008
EARTH	1985-10-20 20:14	< 1 min	0.0339434	0.0339428	0.0000002
EARTH	2005-10-21 09:33	< 1 s	0.0430770	0.0430770	0.0000000
EARTH	2025-10-23 01:56	< 1 min	0.0854558	0.0854546	0.0000004
EARTH	2026-10-17 01:38	< 1 s	0.1796401	0.1796389	0.0000004
EARTH	2045-10-25 09:34	< 1 min	0.1459471	0.1459450	0.0000007
EARTH	2046-10-18 01:08	< 1 min	0.1196942	0.1196922	0.0000007
EARTH	2066-10-19 08:36	< 1 min	0.0657332	0.0657310	0.0000007
EARTH	2086-10-20 07:23	< 1 min	0.0366594	0.0366581	0.0000004
EARTH	2106-10-21 10:58	< 1 s	0.0350379	0.0350372	0.0000003

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
93.83918716	285.68664935	0.02786261	MINIMUM
302.74657106	54.79507936	0.54215950	MINIMUM
14.70489923	178.81118047	0.75369964	SADDLE
198.24633951	333.15012129	0.83858044	SADDLE
9.72942618	345.89609008	1.28638768	SADDLE
175.39259224	142.83563704	2.56336085	MAXIMUM

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MOID Plots

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