Asteroids

516155 2016DP help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.534

Aphelion (Q)

1.511

Eccentricity (e)

0.477

Inclination (i)

13.3

deg

Orbit period (P)

377.7

Earth MOID

0.03225

U parameter

0.0

Next Earth close approach

Date

2045-04-04

Nominal distance (from Earth center)

0.1608

24055702

Maximum Brightness

19.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.1

mag

Diameter

260 - 600*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-02-18

Observatory

Mt. Lemmon 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.022562

1-sigma variation

3.278E-9

Unit

Eccentricity (e)

Value

0.477320

1-sigma variation

6.051E-8

Unit

Inclination (i)

Value

13.3058

1-sigma variation

2.797E-6

Unit

Long. of Ascending Node (Ω)

Value

54.3303

1-sigma variation

9.389E-6

Unit

Arg. of Perihelion (ω)

Value

254.0340

1-sigma variation

8.959E-6

Unit

Mean Anomaly (M)

Value

244.86933

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.534473

1-sigma variation

Unit

Aphelion distance

Value

1.510651

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.080525

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.312677

1-sigma variation

Unit

MOID

Value

0.032250

1-sigma variation

Unit

Orbit Period

Value

377.6878

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.07465E-17	1.85089E-16	5.48403E-16	-3.49872E-15	-5.44822E-15	-1.70782E-14
e	1.85089E-16	3.66107E-15	2.06102E-14	-4.74908E-14	-1.19182E-13	-3.23833E-13
i	5.48403E-16	2.06102E-14	7.82230E-12	1.20827E-11	-1.20755E-11	-2.34559E-12
Ω	-3.49872E-15	-4.74908E-14	1.20827E-11	8.81473E-11	-7.78094E-11	-2.82775E-12
ω	-5.44822E-15	-1.19182E-13	-1.20755E-11	-7.78094E-11	8.02601E-11	1.28970E-11
M	-1.70782E-14	-3.23833E-13	-2.34559E-12	-2.82775E-12	1.28970E-11	3.46901E-11

Date of computation: 2026-03-17 23:26 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

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.053

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

260 - 600*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

3617

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.520033

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-02-18.50112

Unit

Source

[2]

Last Observation

Value

2026-01-13.31124

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

611 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 516155 2016DP from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1954-04-11 02:24	< 1 min	0.1510937	0.1510922	0.0000005
VENUS	1956-05-28 18:11	< 1 min	0.0333586	0.0333497	0.0000030
EARTH	1963-11-22 23:06	< 1 min	0.0502744	0.0502702	0.0000014
EARTH	1964-11-29 21:03	< 1 min	0.1628574	0.1628526	0.0000016
VENUS	1968-12-24 08:20	< 1 min	0.0468367	0.0468348	0.0000006
EARTH	1985-04-03 02:16	< 1 s	0.1773166	0.1773165	0.0000001
VENUS	1985-04-26 19:14	< 1 min	0.0202056	0.0202053	0.0000001
EARTH	1986-04-15 02:23	< 1 min	0.1766704	0.1766703	0.0000001
EARTH	1994-11-20 01:07	< 1 min	0.1352640	0.1352621	0.0000006
EARTH	1995-11-27 04:56	< 1 min	0.0806077	0.0806058	0.0000006
EARTH	2016-04-09 03:24	< 1 s	0.1444705	0.1444704	0.0000000
EARTH	2025-11-24 00:55	< 1 s	0.0319993	0.0319992	0.0000000
VENUS	2033-12-01 06:50	< 1 min	0.0072506	0.0072495	0.0000004
EARTH	2045-04-04 20:18	< 1 min	0.1608024	0.1608010	0.0000005
EARTH	2053-11-19 17:38	< 1 min	0.1392831	0.1392780	0.0000017
EARTH	2054-11-27 18:11	< 1 min	0.0977742	0.0977692	0.0000017
VENUS	2070-03-20 17:19	< 1 min	0.0254926	0.0254878	0.0000016
EARTH	2073-04-06 22:35	< 1 s	0.1469101	0.1469099	0.0000001
EARTH	2081-11-21 23:48	< 1 min	0.0652039	0.0651949	0.0000030
EARTH	2082-12-01 04:31	< 1 min	0.1778914	0.1778804	0.0000037
VENUS	2086-10-28 16:01	< 1 min	0.0107092	0.0106941	0.0000050
EARTH	2100-04-11 18:46	3.6	0.1462691	0.1462361	0.0000110
EARTH	2107-11-20 22:15	1.4	0.1530565	0.1528702	0.0000621
EARTH	2108-11-28 06:57	3.6	0.0986385	0.0984551	0.0000612
VENUS	2123-05-27 11:12	3.0	0.0431268	0.0430763	0.0000169
EARTH	2126-04-11 08:40	2.8	0.1421798	0.1421665	0.0000045

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
84.37334450	320.93909296	0.03199945	MINIMUM
278.83807131	96.30828070	0.14466619	MINIMUM
1.12641089	209.52519112	0.50910383	SADDLE
182.04178893	27.57070049	0.59189168	SADDLE
359.49641479	26.60740803	1.51126812	SADDLE
178.81725274	205.61907086	2.51190512	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out