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977 Philippa (A922 GA)
Classification: Main-belt Asteroid          SPK-ID: 2000977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02585578746034452 3.6011e-08  
a 3.117115805109025 1.2675e-08 au
q 3.036520321362845 1.1284e-07 au
i 15.1737184665732 4.109e-06 deg
node 75.73246812924566 1.4693e-05 deg
peri 72.43679497685569 8.1768e-05 deg
M 31.36044050600572 7.9636e-05 deg
tp 2459025.391395778858
(2020-Jun-24.89139578)
0.00044469 TDB
period 2010.147067530465
5.50
1.2261e-05
3.357e-08
d
yr
n .1790913738676207 1.0924e-09 deg/d
Q 3.197711288855204 1.3003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2935  
   data-arc span      38753 days (106.10 yr)  
   first obs. used      1914-12-19  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37166  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:51:26  

Additional Information
 Earth MOID = 2.08531 au 
 Jupiter MOID = 1.91194 au 
 T_jup = 3.163 
[ 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 9.93   n/a E2021B10 IRAS observations used: 19
diameter diameter 65.471 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.405 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2004) Minor Planet Bull. 31, 85-88.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.712   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=5.73, mean=6.86, max.=8.77) deg.
U-B UB 0.370   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.77 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

977 Philippa (A922 GA)          Discovered 1922-Apr-06 by Jekhovsky, B. at Algiers
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
1952-Dec-01 02:42 00:01 Jupiter 1.91315740537305 1.91315703040017 1.91315778034592 4.70067304722573 4.60552454015099 2434347.612397749 1.08722140001103 104.394257313947 17.4401039608856 -88.2641156483119 3931109.76635534 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51
2024-Nov-01 21:49 < 00:01 Jupiter 1.97003071799487 1.97003035677214 1.97003107921772 5.13794674171758 5.05357188465048 2460616.409183111 0.254125397404955 71.049529749976 15.1320270956021 -83.3815758029019 4744890.72399333 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51
2035-Feb-07 22:29 < 00:01 Jupiter 1.95994873296691 1.95994828373335 1.95994918220046 3.8531706917265 3.73933056601956 2464366.436880250 0.495721842554577 140.08770983635 21.1570204844274 -88.6624026177899 4071974.77695542 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51
2107-Jan-29 18:10 00:02 Jupiter 1.90120274204669 1.90120237161311 1.90120311248027 4.68845361306736 4.59244582774988 2490654.256743456 1.71953719920212 117.980809718797 17.5493045739348 -89.1910873258688 3295785.3967336 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51
2178-Dec-31 17:35 00:03 Jupiter 1.95125344812647 1.95125248356045 1.95125441270458 5.0882344711121 5.00219422392719 2516923.232321587 2.90278840507083 266.755003695779 15.5919675929898 -80.5054852969116 4046678.52460034 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51
2189-Apr-08 21:47 00:04 Jupiter 1.94813117601923 1.94813028557284 1.94813206648831 3.87460713427619 3.76071881799054 2520674.407327953 3.52554082103442 415.743415220606 25.6372598073473 -83.2826659840223 4082564.31004507 T 84 CATAB v2.0f-lin.ifort 2021-Feb-24 00:51:34 2021-Feb-24 00:51

Alternate Designations
 A922 GA = A914 YA = A919 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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