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912 Maritima (A919 HC)
Classification: Main-belt Asteroid          SPK-ID: 2000912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783633332863289 4.0801e-08  
a 3.132267800901617 1.4927e-08 au
q 2.573586075187365 1.263e-07 au
i 18.29622036385508 4.7572e-06 deg
node 33.46028247002973 1.4592e-05 deg
peri 90.85797859376281 1.943e-05 deg
M 239.3908990528014 1.3913e-05 deg
tp 2460074.866410067512
(2023-May-10.36641007)
7.9459e-05 TDB
period 2024.821557464539
5.54
1.4474e-05
3.963e-08
d
yr
n .1777934448953558 1.2709e-09 deg/d
Q 3.690949526615868 1.7589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3609  
   data-arc span      33319 days (91.22 yr)  
   first obs. used      1930-05-19  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .32307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:08:20  

Additional Information
 Earth MOID = 1.66813 au 
 Jupiter MOID = 1.70089 au 
 T_jup = 3.111 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.41   n/a MPO636074  
diameter diameter 82.675 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 1332. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Higgins, D.; Martinez, L. (2011) Minor Planet Bull. 38, 78-79.]
geometric albedo albedo 0.039   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

912 Maritima (A919 HC)          Discovered 1919-Apr-27 by Schwassmann, A. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1927-Aug-13 12:50 00:02 Jupiter 1.74719207276582 1.74719151983131 1.74719262570053 4.59987622050486 4.49324824537714 2425106.034844075 1.51978801612117 202.259202037421 26.5064335474463 -88.9847982556442 2147163.21201722 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
1999-Dec-23 04:09 < 00:01 Jupiter 1.98720585079001 1.98720531480016 1.98720638678189 5.9360156884624 5.86377066322076 2451535.673133710 0.29851255936079 157.153146822003 18.9114422705929 -83.3920525861165 4004882.2272408 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
2010-May-22 02:51 < 00:01 Jupiter 1.74252926180979 1.74252865997095 1.74252986364874 4.25842973036613 4.14271020334941 2455338.618895873 0.300268410789841 147.419540765739 26.4301116434743 -86.0369435182938 2635604.96898637 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
2082-Oct-04 15:17 00:01 Jupiter 1.88348261178665 1.88348167505501 1.88348354853038 5.66296371551709 5.58298633366171 2481772.136476920 1.20689767074582 279.161008184417 21.007081203598 -81.702891689947 3048076.18819412 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
2093-Feb-21 20:10 00:02 Jupiter 1.77221865461312 1.77221775817618 1.77221955105035 3.86965912656078 3.74411169145988 2485565.340438295 1.68416748071624 170.126401436524 47.1663726348357 -83.7102464947989 1889158.37567475 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
2165-Jul-17 01:12 00:03 Jupiter 1.78893030628527 1.78892882944429 1.78893178317546 5.39969507205698 5.31128488280358 2512007.549756378 2.5831748527099 500.220468605855 19.8124225944807 -82.1840901902856 2744544.69441022 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08
2175-Nov-18 01:02 00:04 Jupiter 1.83097931093885 1.83097750680805 1.8309811151016 3.37052991060288 3.23036520171746 2515783.543055095 3.72024701648283 491.268038168034 57.9227501134542 -76.6475231193753 2012783.88933068 T 50 CATAB v2.0g-lin.ifort 2021-Aug-25 07:08:51 2021-Aug-25 07:08

Alternate Designations
 A919 HC = 1930 GA = 1930 MO = A911 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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