Asteroids

484402 2007XH16 help

Last update: 2025-05-21 08:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.908

Aphelion (Q)

1.466

Eccentricity (e)

0.235

Inclination (i)

27.4

deg

Orbit period (P)

472.4

Earth MOID

0.01368

U parameter

0.0

Next Earth close approach

Date

2029-12-20

Nominal distance (from Earth center)

0.07518

11246842

Maximum Brightness

16.8

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

19.7

mag

Diameter

410

Taxonomic type

Rotation period (T)

3.634

Discovery Information

Discovery Date

2007-12-08

Observatory

Siding Spring 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.187062

1-sigma variation

2.186E-9

Unit

Eccentricity (e)

Value

0.234785

1-sigma variation

3.323E-8

Unit

Inclination (i)

Value

27.4289

1-sigma variation

9.257E-6

Unit

Long. of Ascending Node (Ω)

Value

91.2681

1-sigma variation

2.106E-6

Unit

Arg. of Perihelion (ω)

Value

58.3303

1-sigma variation

9.882E-6

Unit

Mean Anomaly (M)

Value

115.41217

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.908357

1-sigma variation

Unit

Aphelion distance

Value

1.465766

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.014643

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.263276

1-sigma variation

Unit

MOID

Value

0.013675

1-sigma variation

Unit

Orbit Period

Value

472.3984

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.77799E-18	6.57720E-17	-3.84463E-15	-8.82206E-18	1.85708E-14	-3.82642E-14
e	6.57720E-17	1.10427E-15	-8.30226E-14	3.02448E-16	2.99701E-13	-5.44977E-13
i	-3.84463E-15	-8.30226E-14	8.56987E-11	-4.99130E-12	-2.08814E-11	3.52308E-11
Ω	-8.82206E-18	3.02448E-16	-4.99130E-12	4.43728E-12	-3.42551E-12	-3.29724E-13
ω	1.85708E-14	2.99701E-13	-2.08814E-11	-3.42551E-12	9.76539E-11	-1.60790E-10
M	-3.82642E-14	-5.44977E-13	3.52308E-11	-3.29724E-13	-1.60790E-10	3.13612E-10

Date of computation: 2025-05-21 08:47 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

3.634

3.75

Unit

Source

[1]

[2]

Quality

Value

Unit

Source

[1]

[2]

Amplitude

Value

0.54

Unit

mag

Source

[2]

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

19.659

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.1247

0.151

Unit

Source

[5]

[4]

Diameter

Value

410

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.51

Unit

V-R

Source

[6]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[7]

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Sources

No.	Name	Additional
[1]	EARN	1.) Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html
[2]	EARN	1.) Betzler, A.S. & A. B. Novaes (2008) MPB 35, 101-102. (PHOTOMETRIC OBSERVATIONS OF THE NEAR EARTH ASTEROIDS 1989 UR AND 2007 XH16) 2.) R. Behrend Courbes des lumiere, Observatoire de Geneve website
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[5]	EARN	1.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs)
[6]	EARN	1.) Betzler, A.S. & A. B. Novaes (2008) MPB 35, 101-102. (PHOTOMETRIC OBSERVATIONS OF THE NEAR EARTH ASTEROIDS 1989 UR AND 2007 XH16)
[7]	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

4929

Unit

Source

[1]

Unobserved

Value

1489

Unit

Source

[1]

Normalized RMS of residuals

Value

0.507828

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2007-12-08.71377

Unit

Source

[2]

Last Observation

Value

2021-06-06.598697

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

462 (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

2007-12-24

Unit

Source

[3]

Last Observation

Value

2007-12-24

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 484402 2007XH16 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	1967-12-17 10:59	< 1 s	0.1644607	0.1644601	0.0000002
EARTH	1976-12-25 03:34	< 1 min	0.0472937	0.0472922	0.0000005
EARTH	2007-12-24 19:51	< 1 s	0.0208242	0.0208242	0.0000000
EARTH	2029-12-20 19:33	< 1 min	0.0751805	0.0751793	0.0000004
EARTH	2060-12-26 19:53	< 1 s	0.0843590	0.0843581	0.0000003
EARTH	2082-12-23 17:55	< 1 s	0.0178150	0.0178149	0.0000000
EARTH	2113-12-23 14:19	< 1 min	0.0383959	0.0383933	0.0000009
EARTH	2122-12-31 09:56	< 1 s	0.1630126	0.1630125	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
313.08424189	349.73234660	0.01367508	MINIMUM
95.16641813	157.03960164	0.22877778	MINIMUM
26.91988300	80.35438900	0.46214946	SADDLE
204.22315884	245.68364029	0.70632708	SADDLE
12.41891263	240.20538021	1.87246538	SADDLE
170.62046464	37.00130766	2.40958201	MAXIMUM

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MOID Plots

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