Asteroids

185851 2000DP107 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.851

Aphelion (Q)

1.879

Eccentricity (e)

0.377

Inclination (i)

8.7

deg

Orbit period (P)

582.5

Earth MOID

0.01434

U parameter

0.0

A₂

9.6

10^-15au/days²

Next Earth close approach

Date

2032-05-12

Nominal distance (from Earth center)

0.16117

24110077

Maximum Brightness

17.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.3

mag

Diameter

863

Taxonomic type

Rotation period (T)

2.774

Discovery Information

Discovery Date

2000-02-29

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

1.365050

1-sigma variation

3.382E-10

Unit

Eccentricity (e)

Value

0.376697

1-sigma variation

7.593E-9

Unit

Inclination (i)

Value

8.6717

1-sigma variation

1.155E-6

Unit

Long. of Ascending Node (Ω)

Value

358.6174

1-sigma variation

2.198E-6

Unit

Arg. of Perihelion (ω)

Value

289.8307

1-sigma variation

2.987E-6

Unit

Mean Anomaly (M)

Value

309.34063

1-sigma variation

8.948E-7

Unit

Perihelion distance

Value

0.850839

1-sigma variation

Unit

Aphelion distance

Value

1.879261

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.034235

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.346228

1-sigma variation

Unit

MOID

Value

0.014345

1-sigma variation

Unit

Orbit Period

Value

582.5342

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

9.57987

1-sigma variation

0.61155

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.14407E-19	9.19690E-20	1.67195E-16	-5.88847E-16	7.48414E-16	-2.86521E-16	2.04068E-10
e	9.19690E-20	5.76595E-17	-5.67750E-15	-1.51812E-15	-8.28751E-15	1.43728E-15	7.29716E-10
i	1.67195E-16	-5.67750E-15	1.33454E-12	-1.52942E-12	2.85025E-12	-6.50988E-13	2.25441E-7
Ω	-5.88847E-16	-1.51812E-15	-1.52942E-12	4.82913E-12	-5.84195E-12	1.63137E-12	-1.05582E-6
ω	7.48414E-16	-8.28751E-15	2.85025E-12	-5.84195E-12	8.91984E-12	-2.37363E-12	1.24861E-6
M	-2.86521E-16	1.43728E-15	-6.50988E-13	1.63137E-12	-2.37363E-12	8.00708E-13	-4.90263E-7
A₂	2.04068E-10	7.29716E-10	2.25441E-7	-1.05582E-6	1.24861E-6	-4.90263E-7	3.73998E-1

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

2.775

2.774

Unit

Source

[6]

[1]

Quality

Value

3,B,R

Unit

Source

[6]

Amplitude

Value

0.17

0.18

Unit

mag

Source

[1]

[6]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[3]

[4]

Taxonomy (all)

Value

Unit

Source

[5]

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.281

18.02

Unit

mag

Source

[7]

[8]

Slope Parameter (G)

Value

0.0

0.15**

Unit

mag

Source

[9]

[7]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.1371

Unit

Source

[11]

Diameter

Value

863

Unit

Source

[10]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.66

0.4

Unit

B-V

V-R

Source

[12]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[13]

Satellites

Satellites

Value

Unit

Source

Satellites

Value

Binary Child 1

Unit

Source

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 4. Skiff, Brian A et al.
[2]	EARN	1.) Scheirich P. & P. Pravec (2009) Icarus 200, 531-547. (Modeling of lightcurves of binary asteroids) (175706,65803, 66391,185851,66063)
[3]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[4]	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)
[5]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[6]	EARN	1.) Naidu, S.P. et al. (2015) Astron. J. 150_54 (12pp). (RADAR IMAGING AND CHARACTERIZATION OF BINARY NEAR-EARTH ASTEROID (185851) 2000 DP107) 2.) Pravec, P. et al. (2000) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/07500/07504.html"> 7504. (2000 DP107) (Rotation period and colors, complex lightcurve, binary) 3.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 4.) Margot, J. L. et al., (2002) Science 296, 1445-1448. (Binary asteroids in the near-Earth object population.[2000 DP107]) 5.) B.Warner, CALL website 6.) Yang, B. et al. (2003) P&SS 51,411-414. (Observations of 2000 DP107 in NAOC: rotation period and reflectance spectrum) 7.) Pravec, P. et al. (2006) Icarus 181, 63-93. (Photometric survey of binary near-Earth asteroids) 8.) Warner, B.D. & R.D. Stephens (2009) MPB 36, 62-63. (LIGHTCURVE ANALYSIS OF TWO BINARY ASTEROIDS: (76818) 2000 RG79 AND (185851) 2000 DP107) 9.) Polishook, D. (2012) MPB 39, 187-192. (LIGHTCURVES AND SPIN PERIODS OF NEAR-EARTH ASTEROIDS, THE WISE OBSERVATORY, 2005 - 2010) (1862,3361,5143,10115,40267,66251,68216,86829, 105140,138893,141432,141495,152931,185851,2009UN3) 10.) Skiff, B.A. et al. (2012) MPB 39, 111-130. (LOWELL OBSERVATORY NEAR-EARTH ASTEROID PHOTOMETRIC SURVEY (NEAPS) - 2008 MAY THROUGH 2008 DECEMBER) (46 NEAs) 11.) Pravec, P. et al (2016) Icarus 267,267-295. (Binary asteroid population. 3. Secondary rotations and elongations) (..,..)
[7]	ESA Aegis	ESA orbit determination and impact monitoring system
[8]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations) 2.) Polishook, D. (2012) MPB 39, 187-192. (LIGHTCURVES AND SPIN PERIODS OF NEAR-EARTH ASTEROIDS, THE WISE OBSERVATORY, 2005 - 2010) (1862,3361,5143,10115,40267,66251,68216,86829, 105140,138893,141432,141495,152931,185851,2009UN3)
[9]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[10]	EARN	1.) Naidu, S.P. et al. (2015) Astron. J. 150_54 (12pp). (RADAR IMAGING AND CHARACTERIZATION OF BINARY NEAR-EARTH ASTEROID (185851) 2000 DP107) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 3.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs) 4.) Marchis, F.; Enriquez, J.E.; Emery, J.P.; Mueller, M.; et al. (2012) Icarus 221, 1130-1161.
[11]	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.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 3.) Lawrence, K.J. et al. (2018) Icarus 300, 12-20. (Arecibo and Goldstone radar images of near-Earth Asteroid (469896) 2005 WC1)
[12]	EARN	1.) Dandy, C.L.; Fitzsimmons, A.; Collander-Brown, S.J. (2003) Icarus 163, 363-373. (Optical colors of 56 near-Earth objects: trends with size and orbit)
[13]	EARN	1.) Ostro, S.J. et al. (2000) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/07400/07496.html"> 7496. (2000 DP107) (Binary asteroid detection) 2.) Margot, J.L. et al. (2000) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/07500/07503.html"> 7503. (2000 DP107) (Confirmation of binary nature) 3.) Margot, J. L. et al., (2002) Science 296, 1445-1448. (Binary asteroids in the near-Earth object population.[2000 DP107]) 4.) Naidu, S.P. et al. (2015) Astron. J. 150_54 (12pp). (RADAR IMAGING AND CHARACTERIZATION OF BINARY NEAR-EARTH ASTEROID (185851) 2000 DP107)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

9096

Unit

Source

[1]

Unobserved

Value

242

Unit

Source

[1]

Normalized RMS of residuals

Value

0.462852

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2000-02-29.20971

Unit

Source

[2]

Last Observation

Value

2025-01-24.186639

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

2210 (9)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2000-09-22

Unit

Source

[3]

Last Observation

Value

2016-08-23

Unit

Source

[3]

Delay (Discarded)

Value

21 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

23 (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 185851 2000DP107 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	1965-06-05 20:26	< 1 min	0.1966131	0.1966129	0.0000001
EARTH	1973-04-29 22:09	< 1 s	0.1053556	0.1053555	0.0000000
EARTH	1981-04-20 11:53	< 1 s	0.1762951	0.1762949	0.0000001
EARTH	2000-09-19 13:19	< 1 s	0.0477673	0.0477672	0.0000000
EARTH	2008-09-10 23:49	< 1 s	0.0578710	0.0578710	0.0000000
EARTH	2016-08-12 22:11	< 1 s	0.1710008	0.1710008	0.0000000
EARTH	2032-05-12 16:58	< 1 s	0.1611659	0.1611658	0.0000000
EARTH	2040-04-26 20:01	< 1 s	0.1077958	0.1077957	0.0000000
EARTH	2059-09-29 12:16	< 1 s	0.1972345	0.1972339	0.0000002
EARTH	2067-09-20 11:02	< 1 min	0.0423916	0.0423909	0.0000002
EARTH	2075-09-13 11:07	< 1 s	0.0457149	0.0457146	0.0000001
EARTH	2083-08-14 19:38	< 1 min	0.1690809	0.1690803	0.0000002
EARTH	2099-05-14 06:13	< 1 min	0.1622416	0.1622403	0.0000004
EARTH	2107-04-29 21:10	< 1 min	0.1067339	0.1067335	0.0000001
EARTH	2115-04-21 22:45	< 1 min	0.1990828	0.1990800	0.0000009

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
46.51052769	252.26522566	0.01489866	MINIMUM
309.63775600	115.17338951	0.10357015	MINIMUM
355.33405973	179.40403080	0.21349776	SADDLE
178.80276696	5.55007485	0.91629833	SADDLE
359.22058001	5.34409382	1.83014754	SADDLE
180.22411722	186.50500668	2.88879613	MAXIMUM

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MOID Plots

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