Asteroids

214869 2007PA8 help

Last update: 2025-03-28 15:40 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.989

Aphelion (Q)

4.710

Eccentricity (e)

0.653

Inclination (i)

2.0

deg

Orbit period (P)

1756.6

Earth MOID

0.03023

U parameter

0.0

Next Earth close approach

Date

2084-10-22

Nominal distance (from Earth center)

0.17349

25953609

Maximum Brightness

15.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

16.4

mag

Diameter

1900 | 1400 | 1300

Taxonomic type

Rotation period (T)

95.10

Discovery Information

Discovery Date

2007-08-09

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

2.849170

1-sigma variation

2.503E-8

Unit

Eccentricity (e)

Value

0.653028

1-sigma variation

7.440E-9

Unit

Inclination (i)

Value

1.9977

1-sigma variation

1.153E-6

Unit

Long. of Ascending Node (Ω)

Value

141.2872

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

293.8690

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

216.71832

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.988582

1-sigma variation

Unit

Aphelion distance

Value

4.709758

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.304352

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.211668

1-sigma variation

Unit

MOID

Value

0.030233

1-sigma variation

Unit

Orbit Period

Value

1756.6125

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.26379E-16	1.33933E-16	5.26740E-15	2.90489E-13	-2.93690E-13	-3.11265E-13
e	1.33933E-16	5.53576E-17	6.28040E-15	2.07068E-13	-2.04174E-13	-6.63442E-14
i	5.26740E-15	6.28040E-15	1.32832E-12	7.64770E-11	-7.55590E-11	-2.61866E-12
Ω	2.90489E-13	2.07068E-13	7.64770E-11	8.29706E-9	-8.23586E-9	-1.49510E-10
ω	-2.93690E-13	-2.04174E-13	-7.55590E-11	-8.23586E-9	8.17555E-9	1.51113E-10
M	-3.11265E-13	-6.63442E-14	-2.61866E-12	-1.49510E-10	1.51113E-10	1.54686E-10

Date of computation: 2025-03-28 15:40 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

95.10

Unit

Source

[6]

Quality

Value

2,R,T

Unit

Source

[6]

Amplitude

Value

0.7

Unit

mag

Source

[6]

Rotation Direction

Value

RETRO

Unit

Source

[1]

Spinvector L

Value

Unit

Source

[1]

Spinvector B

Value

-90

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[2]

[3]

Taxonomy (all)

Value

Q/O,Xc,S

Unit

Source

[4]

[5]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

16.426

16.2

Unit

mag

Source

[7]

[8]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[7]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.29

Unit

Source

[10]

Diameter

Value

1900 | 1400 | 1300

Unit

Source

[9]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.421

0.312

0.804

Unit

V-R

R-I

B-V

Source

[11]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[12]

[13]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Brozovic, M. et al (2013) DPS 45, 101-09. (abstract) (Goldstone radar imaging and shape modeling of near-Earth Asteroid (214869) 2007 PA8)
[2]	EARN	1.) Fornasier, S. et al. (2015) Icarus 250, 280-286. (The potentially hazardous asteroid (214869) 2007 PA8: an unweathered L chondrite analogue surface)
[3]	EARN	1.) N. G. Simion et al, Spectral properties of near-Earth objects with low-Jovian Tisserand invariant (2021)
[4]	EARN	1.) Fornasier, S. et al. (2015) Icarus 250, 280-286. (The potentially hazardous asteroid (214869) 2007 PA8: an unweathered L chondrite analogue surface) 2.) Fornasier, S. et al. (2014) EPSC2014-142. (Abstract) (The Potentially Hazardous Asteroid 2007 PA8: a fresh L chondrite analogue) 3.) Kuroda, D. et al. (2014) PASJ 66, 51. (Visible-wavelength spectroscopy of subkilometer-sized near-Earth asteroids with a low delta-v) (89136,136923,141018,163000,214869, 253062,311925,363305,2009SC15,2009SQ104,2011BT15) 4.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4625"> ATel#4625 (Broadband Photometry of 214869 (2007 PA8): A Slowly Rotating Potentially Hazardous Asteroid) 5.) Godunova, V. et al. (2013) EGU2013-13797-1 (Abstract) (Spectrophotometric studies of near-Earth asteroids at the Terskol Observatory) (2007PA8,2012QG42,4179) 6.) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)
[5]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[6]	EARN	1.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4625"> ATel#4625 (Broadband Photometry of 214869 (2007 PA8): A Slowly Rotating Potentially Hazardous Asteroid) 2.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 3.) Brozovic, M. et al (2013) DPS 45, 101-09. (abstract) (Goldstone radar imaging and shape modeling of near-Earth Asteroid (214869) 2007 PA8) 4.) Brozovic, M. et al. (2016) Icarus 286, 314-329. (Goldstone radar evidence for short-axis mode non-principal-axis rotation of near-Earth asteroid (214869) 2007 PA8)
[7]	ESA Aegis	ESA orbit determination and impact monitoring system
[8]	EARN	1.) Fornasier, S. et al. (2015) Icarus 250, 280-286. (The potentially hazardous asteroid (214869) 2007 PA8: an unweathered L chondrite analogue surface) 2.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4625"> ATel#4625 (Broadband Photometry of 214869 (2007 PA8): A Slowly Rotating Potentially Hazardous Asteroid)
[9]	EARN	1.) Brozovic, M. et al (2013) DPS 45, 101-09. (abstract) (Goldstone radar imaging and shape modeling of near-Earth Asteroid (214869) 2007 PA8) 2.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 3.) Fornasier, S. et al. (2015) Icarus 250, 280-286. (The potentially hazardous asteroid (214869) 2007 PA8: an unweathered L chondrite analogue surface) 4.) Fornasier, S. et al. (2014) EPSC2014-142. (Abstract) (The Potentially Hazardous Asteroid 2007 PA8: a fresh L chondrite analogue)
[10]	EARN	1.) Fornasier, S. et al. (2015) Icarus 250, 280-286. (The potentially hazardous asteroid (214869) 2007 PA8: an unweathered L chondrite analogue surface) 2.) Fornasier, S. et al. (2014) EPSC2014-142. (Abstract) (The Potentially Hazardous Asteroid 2007 PA8: a fresh L chondrite analogue)
[11]	EARN	1.) Lin, C-H. et al. (2018) P&SS 152, 116-135. (Photometric survey and taxonomic identifications of 92 near-Earth asteroids)
[12]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Brozovic, M. et al. (2013) EPSC2013-296 (Abstract) (Goldstone Radar Imaging of Near-Earth Asteroid (214869) 2007 PA8) 3.) Brozovic, M. et al (2013) DPS 45, 101-09. (abstract) (Goldstone radar imaging and shape modeling of near-Earth Asteroid (214869) 2007 PA8) 4.) Brozovic, M. et al. (2016) Icarus 286, 314-329. (Goldstone radar evidence for short-axis mode non-principal-axis rotation of near-Earth asteroid (214869) 2007 PA8)
[13]	EARN	1.) Kuroda, D. et al. (2014) PASJ 66, 51. (Visible-wavelength spectroscopy of subkilometer-sized near-Earth asteroids with a low delta-v) (89136,136923,141018,163000,214869, 253062,311925,363305,2009SC15,2009SQ104,2011BT15) 2.) Godunova, V. et al. (2013) EGU2013-13797-1 (Abstract) (Spectrophotometric studies of near-Earth asteroids at the Terskol Observatory) (2007PA8,2012QG42,4179) 3.) Sanchez, J.A. et al. (2015)Astrophys. J. 808_93 (6pp). (Composition of Potentially Hazardous Asteroid (214869) 2007 PA8: An H Chondrite from the Outer Asteroid Belt) 4.) Sanchez, J.A. et al. (2015) DPS47-213.10. (astract) (Potentially hazardous asteroid (214869) 2007 PA8: The missing link between H chondrites and the outer asteroid belt) 5.) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7606

Unit

Source

[1]

Unobserved

Value

733

Unit

Source

[1]

Normalized RMS of residuals

Value

0.42973

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-07-13.22426

Unit

Source

[2]

Last Observation

Value

2023-05-10.350646

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

735 (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

2012-10-16

Unit

Source

[3]

Last Observation

Value

2012-11-13

Unit

Source

[3]

Delay (Discarded)

Value

15 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

26 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

41 (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 214869 2007PA8 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	1961-01-24 19:37	< 1 min	0.1305051	0.1304988	0.0000021
MARS	2008-06-11 11:36	< 1 min	0.0240980	0.0240976	0.0000001
EARTH	2012-11-05 16:41	< 1 s	0.0432936	0.0432936	0.0000000
EARTH	2084-10-22 22:24	< 1 min	0.1734892	0.1734863	0.0000010
EARTH	2122-12-07 21:57	1.1	0.0444077	0.0444073	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
3.82537248	341.57092206	0.03023296	MINIMUM
359.46609289	152.21947944	2.00277167	SADDLE
179.88494731	152.79246166	3.69592932	SADDLE
179.90135660	332.80265391	5.69475734	MAXIMUM

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MOID Plots

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