Asteroids

68950 2002QF15 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.693

Aphelion (Q)

1.421

Eccentricity (e)

0.344

Inclination (i)

25.2

deg

Orbit period (P)

396.9

Earth MOID

0.00477

U parameter

0.0

Next Earth close approach

Date

2028-10-31

Nominal distance (from Earth center)

0.1929

28858126

Maximum Brightness

16.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

16.4

mag

Diameter

1310

Taxonomic type

S/Sr

Rotation period (T)

45.24

Discovery Information

Discovery Date

2002-08-27

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.056962

1-sigma variation

3.774E-11

Unit

Eccentricity (e)

Value

0.344283

1-sigma variation

1.208E-9

Unit

Inclination (i)

Value

25.1522

1-sigma variation

1.947E-6

Unit

Long. of Ascending Node (Ω)

Value

236.2035

1-sigma variation

4.463E-7

Unit

Arg. of Perihelion (ω)

Value

255.5725

1-sigma variation

9.827E-7

Unit

Mean Anomaly (M)

Value

57.34989

1-sigma variation

9.010E-7

Unit

Perihelion distance

Value

0.693068

1-sigma variation

Unit

Aphelion distance

Value

1.420856

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.006222

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.130444

1-sigma variation

Unit

MOID

Value

0.004774

1-sigma variation

Unit

Orbit Period

Value

396.9059

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.42426E-21	-1.89294E-21	-2.11248E-18	-4.46817E-18	2.36656E-17	-2.52088E-17
e	-1.89294E-21	1.45943E-18	-5.52935E-16	-2.61032E-17	-5.89283E-16	5.00597E-16
i	-2.11248E-18	-5.52935E-16	3.79196E-12	-9.50541E-14	1.06218E-12	-8.70848E-13
Ω	-4.46817E-18	-2.61032E-17	-9.50541E-14	1.99209E-13	-2.28890E-13	1.75123E-14
ω	2.36656E-17	-5.89283E-16	1.06218E-12	-2.28890E-13	9.65705E-13	-7.53602E-13
M	-2.52088E-17	5.00597E-16	-8.70848E-13	1.75123E-14	-7.53602E-13	8.11781E-13

Date of computation: 2025-11-24 16:53 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

45.24

23.5

Unit

Source

[1]

[4]

Quality

Value

2,D,R

Unit

Source

[4]

Amplitude

Value

0.36

>=0.3

Unit

mag

Source

[1]

[4]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

224

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

S/Sr

Unit

Source

[2]

Taxonomy (all)

Value

V;S/Sr

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

16.374

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.249

0.358

0.1778

Unit

Source

[6]

[7]

[8]

Diameter

Value

1310

Unit

Source

[6]

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

[9]

[10]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2019 March-July, B.D. Warner
[2]	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)
[3]	EARN	1.) Gietzen, K.M. & C.H.S. Lacy (2007) LPSC 38, 1104. (Visible and near infrared spectra of main belt and near Earth asteroids) (1036,3908,7753,22771,54509,66251,68950,J99JV3, K03YQ117) 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)
[4]	EARN	1.) Warner, B.D. (2006) MPB 33, 85-88. (asteroid lightcurve analysis at the Palmer Divide observatory - March-June 2006) (...,68950,...) 2.) Harris(JPL), A.W. unpublished data 3.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[7]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[8]	EARN	1.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs) 2.) Usui, F. et al. (2011) Pub. Astron. Soc. Japan 63, 1117-1138. (Asteroid Catalog Using AKARI: AKARI/IRC Mid-Infrared Asteroid Survey)
[9]	EARN	1.) Gietzen, K.M. & C.H.S. Lacy (2007) LPSC 38, 1104. (Visible and near infrared spectra of main belt and near Earth asteroids) (1036,3908,7753,22771,54509,66251,68950,J99JV3, K03YQ117) 2.) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.) 3.) Binzel, R.P. et al. href="http://smass.mit.edu/minus.html"> Webpage 4.) deLeon, J. et al. (2010) Astron. Astrophys 517, A23. (Observations, compositional, and physical characterization of near-Earth and Mars-crosser asteroids from a spectroscopic survey)
[10]	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

24191

Unit

Source

[1]

Unobserved

Value

1508

Unit

Source

[1]

Normalized RMS of residuals

Value

0.405837

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1955-07-23.23958

Unit

Source

[2]

Last Observation

Value

2021-10-15.11638

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

2910 (12)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2003-11-05

Unit

Source

[3]

Last Observation

Value

2019-05-27

Unit

Source

[3]

Delay (Discarded)

Value

12 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

13 (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 68950 2002QF15 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au
EARTH	1953-11-07 04:59	< 1 s	0.1188204	0.1188204
EARTH	1956-05-14 04:52	< 1 s	0.0667836	0.0667836
EARTH	1969-05-23 17:10	< 1 s	0.1893959	0.1893958
EARTH	1978-11-07 19:14	< 1 s	0.1171521	0.1171521
EARTH	1981-05-14 09:54	< 1 s	0.0701639	0.0701638
EARTH	1994-05-22 20:11	< 1 s	0.1593942	0.1593942
EARTH	2003-11-04 18:42	< 1 s	0.1441040	0.1441040
EARTH	2006-05-13 07:07	< 1 s	0.1252517	0.1252517
EARTH	2016-11-19 20:27	< 1 s	0.1609689	0.1609689
EARTH	2019-05-20 09:00	< 1 s	0.0882456	0.0882456
EARTH	2028-10-31 01:41	< 1 s	0.1929047	0.1929046
EARTH	2031-05-12 12:29	< 1 s	0.1897476	0.1897476
EARTH	2041-11-16 16:10	< 1 s	0.1332017	0.1332017
EARTH	2044-05-18 07:05	< 1 s	0.0503057	0.0503057
EARTH	2053-10-31 01:11	< 1 s	0.1979820	0.1979820
EARTH	2056-05-11 20:29	< 1 s	0.1870450	0.1870450
EARTH	2066-11-19 18:03	< 1 s	0.1542889	0.1542889
EARTH	2069-05-20 04:07	< 1 s	0.0919982	0.0919982
EARTH	2078-11-04 00:44	< 1 s	0.1516146	0.1516146
EARTH	2081-05-13 04:54	< 1 s	0.1252631	0.1252631
EARTH	2094-05-23 10:06	< 1 s	0.1658030	0.1658029
EARTH	2103-11-09 15:02	< 1 s	0.1144698	0.1144698
EARTH	2106-05-16 04:06	< 1 s	0.0627788	0.0627788
EARTH	2119-05-25 17:11	< 1 s	0.1894606	0.1894605

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
83.49813142	132.82223538	0.00615319	MINIMUM
295.24305529	306.72672028	0.10812719	MINIMUM
9.02563849	41.30307173	0.46338337	SADDLE
189.32943704	215.67220783	0.65493625	SADDLE
4.90006362	214.91741102	1.66884188	SADDLE
177.29860467	26.36003310	2.35471197	MAXIMUM

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MOID Plots

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