Asteroids

2015DR215 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Atira

Perihelion (q)

0.352

Aphelion (Q)

0.981

Eccentricity (e)

0.472

Inclination (i)

4.1

deg

Orbit period (P)

198.8

Earth MOID

0.04448

U parameter

0.8

Next Earth close approach

Date

2028-03-22

Nominal distance (from Earth center)

0.05685

8504949

Maximum Brightness

18.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.4

mag

Diameter

220 - 500*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-02-18

Observatory

Pan-STARRS 1, Haleakala

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

0.666642

1-sigma variation

3.355E-9

Unit

Eccentricity (e)

Value

0.471513

1-sigma variation

5.435E-8

Unit

Inclination (i)

Value

4.0552

1-sigma variation

1.401E-5

Unit

Long. of Ascending Node (Ω)

Value

314.5633

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

42.6954

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

91.82333

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.352311

1-sigma variation

Unit

Aphelion distance

Value

0.980972

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.629523

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.192264

1-sigma variation

Unit

MOID

Value

0.044478

1-sigma variation

Unit

Orbit Period

Value

198.8094

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.12592E-17	8.45310E-17	3.48840E-14	5.96953E-13	-6.16919E-13	-2.38152E-14
e	8.45310E-17	2.95378E-15	2.55737E-13	5.13843E-12	-5.08431E-12	-6.79099E-13
i	3.48840E-14	2.55737E-13	1.96179E-10	2.75368E-9	-2.81622E-9	-6.69295E-11
Ω	5.96953E-13	5.13843E-12	2.75368E-9	4.31430E-8	-4.42741E-8	-9.55181E-10
ω	-6.16919E-13	-5.08431E-12	-2.81622E-9	-4.42741E-8	4.56041E-8	5.96586E-10
M	-2.38152E-14	-6.79099E-13	-6.69295E-11	-9.55181E-10	5.96586E-10	1.05530E-9

Date of computation: 2026-06-04 23:11 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

20.447

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

220 - 500*

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

[-]

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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

2601

Unit

Source

[1]

Unobserved

Value

1578

Unit

Source

[1]

Normalized RMS of residuals

Value

0.593305

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-02-18.63552

Unit

Source

[2]

Last Observation

Value

2022-04-04.12211

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

82 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2015DR215 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	1954-03-25 20:34	< 1 min	0.0659797	0.0659793	0.0000001
MERCURY	1959-04-29 09:58	< 1 min	0.0270077	0.0270073	0.0000002
EARTH	1960-03-29 16:27	< 1 min	0.0940472	0.0940467	0.0000002
EARTH	1966-03-31 21:21	< 1 min	0.1447743	0.1447735	0.0000003
VENUS	1970-05-15 11:43	< 1 s	0.0426055	0.0426044	0.0000004
MERCURY	1971-11-04 07:09	< 1 min	0.0434995	0.0434982	0.0000004
EARTH	1973-02-28 17:34	< 1 min	0.1540041	0.1540029	0.0000004
MERCURY	1974-01-10 17:50	< 1 min	0.0431311	0.0431295	0.0000005
EARTH	1979-03-01 17:22	< 1 min	0.0852132	0.0852120	0.0000004
VENUS	1984-07-08 14:37	< 1 s	0.0412372	0.0412357	0.0000005
EARTH	1985-03-05 07:25	< 1 min	0.0482374	0.0482367	0.0000002
MERCURY	1986-07-15 20:11	< 1 min	0.0303163	0.0303157	0.0000002
EARTH	1991-03-15 20:46	< 1 min	0.0481766	0.0481764	0.0000001
EARTH	1997-03-26 04:13	< 1 min	0.0669320	0.0669315	0.0000002
VENUS	1998-09-01 18:23	< 1 s	0.0375734	0.0375720	0.0000005
MERCURY	2001-03-25 14:01	< 1 min	0.0279890	0.0279887	0.0000001
EARTH	2003-04-01 00:03	< 1 min	0.1223158	0.1223148	0.0000003
MERCURY	2005-08-18 22:24	< 1 min	0.0490351	0.0490345	0.0000002
EARTH	2010-03-01 04:18	< 1 min	0.1474367	0.1474355	0.0000004
EARTH	2016-03-02 01:14	< 1 s	0.0701324	0.0701317	0.0000002
MERCURY	2018-02-02 11:05	< 1 min	0.0282496	0.0282492	0.0000001
VENUS	2022-01-18 15:21	< 1 min	0.0396575	0.0396567	0.0000003
EARTH	2022-03-11 06:39	< 1 s	0.0447874	0.0447871	0.0000001
EARTH	2028-03-22 05:49	< 1 min	0.0568521	0.0568518	0.0000001
MERCURY	2032-10-12 17:17	< 1 min	0.0285887	0.0285881	0.0000002
EARTH	2034-03-30 18:19	< 1 min	0.0934917	0.0934908	0.0000003
VENUS	2036-03-13 11:22	< 1 min	0.0304995	0.0304984	0.0000003
EARTH	2040-04-01 00:01	< 1 min	0.1531726	0.1531707	0.0000006
EARTH	2047-03-01 14:11	< 1 min	0.1358784	0.1358758	0.0000008
MERCURY	2047-06-23 02:35	< 1 min	0.0288728	0.0288725	0.0000001
VENUS	2050-05-07 12:20	< 1 min	0.0287843	0.0287822	0.0000007
EARTH	2053-03-01 22:33	< 1 min	0.0805865	0.0805841	0.0000008
EARTH	2059-03-05 08:53	< 1 min	0.0521617	0.0521603	0.0000005
MERCURY	2059-12-31 13:44	< 1 min	0.0294536	0.0294533	0.0000001
EARTH	2065-03-09 13:43	< 1 min	0.0445392	0.0445390	0.0000001
VENUS	2069-06-01 10:53	< 1 min	0.0294720	0.0294662	0.0000019
MERCURY	2070-05-07 18:07	< 1 min	0.0444045	0.0443967	0.0000026
EARTH	2071-03-15 10:40	< 1 min	0.0471396	0.0471384	0.0000004
EARTH	2077-03-22 23:56	< 1 min	0.0563196	0.0563168	0.0000009
MERCURY	2082-11-15 20:21	< 1 min	0.0368553	0.0368429	0.0000041
EARTH	2083-03-29 23:23	< 1 min	0.0778501	0.0778427	0.0000025
EARTH	2089-04-01 04:37	< 1 min	0.1138760	0.1138654	0.0000035
EARTH	2095-04-02 04:59	< 1 min	0.1688541	0.1688442	0.0000033
MERCURY	2095-05-25 05:51	< 1 min	0.0476651	0.0476521	0.0000043
EARTH	2096-03-02 00:53	< 1 min	0.1933630	0.1933529	0.0000034
MERCURY	2097-08-01 09:38	1.0	0.0475117	0.0475039	0.0000026
MERCURY	2099-10-21 12:16	< 1 min	0.0477893	0.0477880	0.0000004
EARTH	2102-03-02 16:53	< 1 s	0.1340236	0.1340190	0.0000016
EARTH	2108-03-03 02:12	< 1 min	0.0805343	0.0805333	0.0000003
MERCURY	2110-02-07 00:20	< 1 min	0.0364855	0.0364826	0.0000010
EARTH	2114-03-07 05:20	< 1 min	0.0500504	0.0500479	0.0000008
VENUS	2116-10-15 12:28	< 1 min	0.0269349	0.0269291	0.0000019
EARTH	2120-03-12 17:45	1.4	0.0452931	0.0452920	0.0000004
MERCURY	2122-08-19 17:40	3.0	0.0464029	0.0463782	0.0000082
MERCURY	2124-11-08 11:12	1.8	0.0474855	0.0474823	0.0000011
EARTH	2126-03-22 06:21	2.8	0.0527294	0.0527219	0.0000025

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
166.27493356	66.70073464	0.04506887	MINIMUM
355.38619877	250.86205127	0.65388809	SADDLE
355.25409232	70.60754177	1.34778938	SADDLE
178.04030736	253.72838639	1.98565825	MAXIMUM

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MOID Plots

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