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885 Ulrike (A917 SV)
Classification: Main-belt Asteroid          SPK-ID: 2000885
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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .18395131514751 1.651e-08  
a 3.094842224508804 9.0402e-09 au
q 2.525541927136364 5.1783e-08 au
i 3.307622112676437 1.0459e-06 deg
node 148.8907433608755 1.0883e-05 deg
peri 203.8309088698026 1.253e-05 deg
M 29.96556935741665 4.7056e-06 deg
tp 2459230.970184774498
(2021-Jan-16.47018477)
2.5833e-05 TDB
period 1988.64012128078
5.44
8.7134e-06
2.386e-08
d
yr
n .1810282293651717 7.9319e-10 deg/d
Q 3.664142521881244 1.0703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3722  
   data-arc span      41987 days (114.95 yr)  
   first obs. used      1906-08-24  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .424  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:06:18  

Additional Information
 Earth MOID = 1.51978 au 
 Jupiter MOID = 1.77422 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456858.5 (2014-Jul-20.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1875425752800227 1.6603e-08  
q 2.513420219955806 5.2466e-08 au
tp 2457247.143090862798
(2015-Aug-12.64309086)
2.5018e-05 TDB
node 149.0553304042885 1.0919e-05 deg
peri 204.5480406837918 1.2474e-05 deg
i 3.304103153917015 1.0455e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3722  
   data-arc span      41987 days (114.95 yr)  
   first obs. used      1906-08-24  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .424  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:06:18  

Additional Information
 Jupiter MOID = 1.77422 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.756696138467442E-16 -8.624122845397933E-16 1.716268988717047E-13 -6.270125209163164E-14 1.037134726870599E-13 -7.786876009300421E-15
q -8.624122845397933E-16 2.752655867470186E-15 -5.653819643057247E-13 1.995250985385329E-13 -3.351926025101707E-13 2.47852405100218E-14
tp 1.716268988717047E-13 -5.653819643057247E-13 6.258824905434373E-10 1.297814137810112E-11 1.445620453182481E-10 -2.123752809261097E-12
node -6.270125209163164E-14 1.995250985385329E-13 1.297814137810112E-11 1.19226982588938E-10 -1.173262023628923E-10 9.16668414795861E-12
peri 1.037134726870599E-13 -3.351926025101707E-13 1.445620453182481E-10 -1.173262023628923E-10 1.555957690583433E-10 -9.703672714678869E-12
i -7.786876009300421E-15 2.47852405100218E-14 -2.123752809261097E-12 9.16668414795861E-12 -9.703672714678869E-12 1.093022652733374E-12

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 10.75   n/a E2021B10  
diameter diameter 30.537 km 0.756 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.90 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Menke, J. (2005) Minor Planet Bull. 32, 85-88.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.109   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

885 Ulrike (A917 SV)          Discovered 1917-Sep-23 by Belyavskij, S. at Simeis
Independent discovery Sept. 26 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A917 SV = 1933 QQ = 1934 XL = A906 SE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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