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816 Juliana (A916 CE)
Classification: Main-belt Asteroid          SPK-ID: 2000816
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1084699393496282 1.8036e-08  
a 3.001940706546962 1.0738e-08 au
q 2.676320380176633 5.3088e-08 au
i 14.32830143779145 5.0151e-07 deg
node 127.8429638626972 2.8939e-06 deg
peri 20.88978608168604 9.9463e-06 deg
M 47.22329379236702 8.2999e-06 deg
tp 2458951.295794806555
(2020-Apr-11.79579481)
4.3481e-05 TDB
period 1899.772478050678
5.20
1.0193e-05
2.791e-08
d
yr
n .1894963760973048 1.0167e-09 deg/d
Q 3.327561032917291 1.1902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3134  
   data-arc span      38387 days (105.10 yr)  
   first obs. used      1916-02-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:29:41  

Additional Information
 Earth MOID = 1.69341 au 
 Jupiter MOID = 1.71746 au 
 T_jup = 3.197 
[ 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 10.46   n/a E2021B10  
diameter diameter 50.745 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.557 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2005) Minor Planet Bull. 32, 82-83.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

816 Juliana (A916 CE)          Discovered 1916-Feb-08 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
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
1903-Mar-05 12:59 00:02 Jupiter 1.71681708981162 1.71681688254626 1.71681729708127 3.71058815094647 3.57515433873045 2416179.040736122 1.77109444468786 195.06070134992 6.46045066797738 86.9493567803416 13237739.9529653 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
1949-Jul-16 22:23 00:01 Jupiter 1.89454725981093 1.89454663367393 1.89454788594868 4.06727602635202 3.95582677693299 2433114.432294929 1.04571928728579 76.1812030673646 15.8820430417121 -69.5132651109395 7708588.52912421 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
1986-Sep-26 17:09 < 00:01 Jupiter 1.77662625376289 1.77662603160076 1.77662647592532 3.32025645564639 3.17341850090808 2446700.214884109 0.49788830120407 43.8929263960277 5.06948929815259 74.8090045186573 16221852.6790274 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
2033-Jan-31 16:26 < 00:01 Jupiter 1.77171919834391 1.77171890544749 1.77171949124033 3.95250542978009 3.82963970954405 2463629.184842229 0.310722853923478 28.92461263116 10.1664356188089 -71.1027692189753 9589046.60815609 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
2070-May-09 16:32 00:01 Jupiter 1.88766888553261 1.88766846659435 1.88766930447151 2.74759120433619 2.57911427190882 2477241.189035913 1.05467470366328 61.6735984662664 3.85415356089597 62.3774285822321 17536300.4522274 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
2116-Aug-17 11:07 00:02 Jupiter 1.73240072272616 1.73240052300522 1.73240092244945 3.69533212167209 3.56056451852897 2494141.963468223 1.61891290216867 173.324196383275 7.04308968809285 -89.3728112740794 12244349.4033451 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
2162-Dec-29 20:36 00:02 Jupiter 1.9350828592806 1.93508134399646 1.93508437456827 4.18017088032918 4.07411224838903 2511077.358651955 2.34282627166873 155.153030070352 16.1428514151118 -62.3334725049368 6953781.7098196 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
2200-Mar-14 04:41 00:03 Jupiter 1.76553882419082 1.76553806327136 1.76553958512585 3.21943659983896 3.06680062306105 2524665.695162433 3.15671876324781 274.627503960701 5.1510044303622 78.5703801430571 15356948.9564522 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:30:33 2021-Apr-12 11:30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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